Added value: +{
+  "description": "clip_sound: keep, mute, replace or mix (see op).",
+  "enum": [
+    "keep",
+    "mute",
+    "replace",
+    "mix"
+  ],
+  "type": "string"
+}

Previous value: -"volume: -60 to +24 dB, 0 is as recorded."New value: +"volume: -60 to +24 dB, 0 is as recorded. clip_sound mix or replace: the level of the laid sound."

Previous value: -"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). ripple_trim: a trim whose change in length moves every later clip on the track (no gap). roll: move the cut between a clip and the clip touching it to to_sec (edge end or start). slip: keep the clip in place and change which part of its file plays (by_sec). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip. sound_role: a sound clip's role (role: voice, music or effect; read_editor_timeline shows each sound clip's role). sound_mix: the project's sound (effects_on, duck_music, dip_db, attack_sec, release_sec). The timeline tabs above the timeline (\"Timeline 01\", \"+\"): timeline_add (name, copy_from: another tab to start as a copy of), timeline_rename (timeline, name), timeline_delete (timeline; never the last one), timeline_select (timeline: the tab the open Editor shows). project_settings: the project's shape (width, height, fps, or ratio; 9:16 vertical = width 1080, height 1920)."New value: +"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). ripple_trim: a trim whose change in length moves every later clip on the track (no gap). roll: move the cut between a clip and the clip touching it to to_sec (edge end or start). slip: keep the clip in place and change which part of its file plays (by_sec). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip. sound_role: a sound clip's role (role: voice, music or effect; read_editor_timeline shows each sound clip's role). sound_mix: the project's sound (effects_on, duck_music, dip_db, attack_sec, release_sec). clip_sound: what a video clip's own sound does (lane, index, choice): keep (its own sound, the default), mute (off but kept on the timeline), replace (off, with a sound from the project laid from the clip's start for as long as both run: media_id or media_name), mix (on, with that sound over the clip at db); the laid sound follows the clip through a move, trim, split, copy or delete, every choice takes the last one back (keep undoes replace), and read_editor_timeline shows each clip's soundChoice, a muted sound as muted and a laid sound as choiceFor. The timeline tabs above the timeline (\"Timeline 01\", \"+\"): timeline_add (name, copy_from: another tab to start as a copy of), timeline_rename (timeline, name), timeline_delete (timeline; never the last one), timeline_select (timeline: the tab the open Editor shows). project_settings: the project's shape (width, height, fps, or ratio; 9:16 vertical = width 1080, height 1920)."

Previous value: -[
-  "place",
-  "trim",
-  "ripple_trim",
-  "roll",
-  "slip",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_delete",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look",
-  "transition",
-  "keyframe",
-  "keyframes_clear",
-  "clip_settings",
-  "snapshot",
-  "snapshot_restore",
-  "revision_restore",
-  "comment",
-  "comment_resolve",
-  "marker_add",
-  "marker_edit",
-  "marker_delete",
-  "freeze",
-  "reverse",
-  "clip_look",
-  "split_scenes",
-  "auto_clip",
-  "sound_role",
-  "sound_mix",
-  "timeline_add",
-  "timeline_rename",
-  "timeline_delete",
-  "timeline_select",
-  "project_settings"
-]New value: +[
+  "place",
+  "trim",
+  "ripple_trim",
+  "roll",
+  "slip",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_delete",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings",
+  "snapshot",
+  "snapshot_restore",
+  "revision_restore",
+  "comment",
+  "comment_resolve",
+  "marker_add",
+  "marker_edit",
+  "marker_delete",
+  "freeze",
+  "reverse",
+  "clip_look",
+  "split_scenes",
+  "auto_clip",
+  "sound_role",
+  "sound_mix",
+  "clip_sound",
+  "timeline_add",
+  "timeline_rename",
+  "timeline_delete",
+  "timeline_select",
+  "project_settings"
+]

Previous value: -"sound_mix: true (the default) dips Music while any Voice plays; effects never dip."New value: +"sound_mix: true (the default) dips Music (by dip_db) and Effects (by effects_dip_db) while any Voice plays."

Added value: +{
+  "description": "sound_mix: how far Effects dip under a voice, -60 to 0 dB (default -6; 0 = effects do not dip).",
+  "type": "number"
+}

Previous value: -"sound_role: Voice (narration, dialogue), Music (beds, songs) or Effect (whooshes, hits, dings). Music dips under voices when the project ducks; effects never dip and go silent when sound effects are off."New value: +"sound_role: Voice (narration, dialogue), Music (beds, songs) or Effect (whooshes, hits, dings). Music and effects dip under voices when the project ducks (each by its own dip); effects go silent when sound effects are off."

Added value: +{
+  "description": "Also list the project media (ids and names to place). Default false.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "slip: how far the part of its file the clip plays moves (positive = later in the file); its place and length on the timeline stay.",
+  "type": "number"
+}

Added value: +{
+  "description": "timeline_add: the name or id of a tab whose clips the new tab starts with (default: an empty timeline).",
+  "type": "string"
+}

Added value: +{
+  "description": "roll: which cut of the clip moves, the one at its end (default) or its start.",
+  "enum": [
+    "start",
+    "end"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "project_settings: frames per second (default 30).",
+  "enum": [
+    24,
+    25,
+    30,
+    50,
+    60
+  ],
+  "type": "integer"
+}

Added value: +{
+  "description": "project_settings: frame height in pixels (9:16 vertical: 1920).",
+  "type": "integer"
+}

Previous value: -"lane_add / lane_settings: the track's name as it reads on screen."New value: +"lane_add / lane_settings: the track's name as it reads on screen. timeline_add / timeline_rename: the tab's name (\"Best picks\", \"30 s\")."

Previous value: -"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip. sound_role: a sound clip's role (role: voice, music or effect; read_editor_timeline shows each sound clip's role). sound_mix: the project's sound (effects_on, duck_music, dip_db, attack_sec, release_sec)."New value: +"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). ripple_trim: a trim whose change in length moves every later clip on the track (no gap). roll: move the cut between a clip and the clip touching it to to_sec (edge end or start). slip: keep the clip in place and change which part of its file plays (by_sec). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip. sound_role: a sound clip's role (role: voice, music or effect; read_editor_timeline shows each sound clip's role). sound_mix: the project's sound (effects_on, duck_music, dip_db, attack_sec, release_sec). The timeline tabs above the timeline (\"Timeline 01\", \"+\"): timeline_add (name, copy_from: another tab to start as a copy of), timeline_rename (timeline, name), timeline_delete (timeline; never the last one), timeline_select (timeline: the tab the open Editor shows). project_settings: the project's shape (width, height, fps, or ratio; 9:16 vertical = width 1080, height 1920)."

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_delete",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look",
-  "transition",
-  "keyframe",
-  "keyframes_clear",
-  "clip_settings",
-  "snapshot",
-  "snapshot_restore",
-  "revision_restore",
-  "comment",
-  "comment_resolve",
-  "marker_add",
-  "marker_edit",
-  "marker_delete",
-  "freeze",
-  "reverse",
-  "clip_look",
-  "split_scenes",
-  "auto_clip",
-  "sound_role",
-  "sound_mix"
-]New value: +[
+  "place",
+  "trim",
+  "ripple_trim",
+  "roll",
+  "slip",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_delete",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings",
+  "snapshot",
+  "snapshot_restore",
+  "revision_restore",
+  "comment",
+  "comment_resolve",
+  "marker_add",
+  "marker_edit",
+  "marker_delete",
+  "freeze",
+  "reverse",
+  "clip_look",
+  "split_scenes",
+  "auto_clip",
+  "sound_role",
+  "sound_mix",
+  "timeline_add",
+  "timeline_rename",
+  "timeline_delete",
+  "timeline_select",
+  "project_settings"
+]

Added value: +{
+  "description": "project_settings: the frame by its shape instead of width and height (9:16 = 1080x1920).",
+  "enum": [
+    "16:9",
+    "9:16",
+    "1:1",
+    "4:5",
+    "4:3",
+    "3:4",
+    "21:9",
+    "2.35:1",
+    "2:1",
+    "1.85:1"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "Which timeline tab this step works on, by name (\"30 s\") or id (read_editor_timeline lists them). Default: the call's timeline, else the open tab.",
+  "type": "string"
+}

Previous value: -"move: the new start on the timeline."New value: +"move: the new start on the timeline. roll: where the cut between the clip and the one touching it goes."

Added value: +{
+  "description": "project_settings: frame width in pixels (9:16 vertical: 1080).",
+  "type": "integer"
+}

Added value: +{
+  "description": "How much timeline comes back. full: every track and clip. changes: only the tracks this call changed. summary: each track's clip count and end. Fields left out are empty or at their default (speed 1, volume 0 dB, no fades, enabled). Default changes.",
+  "enum": [
+    "full",
+    "changes",
+    "summary"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "Which timeline tab the steps work on, by name or id (a step's own timeline wins). Default: the open tab, as before.",
+  "type": "string"
+}

Added value: +{
+  "description": "fades: the fade in's curve; smooth (an S curve, the default) never sounds like a sudden cut.",
+  "enum": [
+    "linear",
+    "smooth",
+    "exp"
+  ],
+  "type": "string"
+}

Previous value: -"fades: seconds of fade at the start."New value: +"fades: seconds of fade at the start (a sound clip's fade is at least 0.6 s, or half a shorter clip)."

Added value: +{
+  "description": "fades: the fade out's curve; smooth (an S curve, the default) never sounds like a sudden cut.",
+  "enum": [
+    "linear",
+    "smooth",
+    "exp"
+  ],
+  "type": "string"
+}

Previous value: -"fades: seconds of fade at the end."New value: +"fades: seconds of fade at the end (a sound clip's fade is at least 0.6 s, or half a shorter clip)."

Added value: +{
+  "description": "volume: points on the clip's volume line, t = seconds from the clip's start, db = dB above (+) or below (-) the clip's volume; straight lines between points; [] clears them.",
+  "items": {
+    "properties": {
+      "db": {
+        "type": "number"
+      },
+      "t": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "t",
+      "db"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "sound_mix: seconds the music takes to go down before a voice starts (default 0.8).",
+  "type": "number"
+}

Added value: +{
+  "description": "sound_mix: how far Music dips under a voice, -60 to 0 dB (default -10).",
+  "type": "number"
+}

Added value: +{
+  "description": "sound_mix: true (the default) dips Music while any Voice plays; effects never dip.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "sound_mix: false silences every Effect clip in the player and the export; true brings them back.",
+  "type": "boolean"
+}

Previous value: -"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip."New value: +"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip. sound_role: a sound clip's role (role: voice, music or effect; read_editor_timeline shows each sound clip's role). sound_mix: the project's sound (effects_on, duck_music, dip_db, attack_sec, release_sec)."

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_delete",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look",
-  "transition",
-  "keyframe",
-  "keyframes_clear",
-  "clip_settings",
-  "snapshot",
-  "snapshot_restore",
-  "revision_restore",
-  "comment",
-  "comment_resolve",
-  "marker_add",
-  "marker_edit",
-  "marker_delete",
-  "freeze",
-  "reverse",
-  "clip_look",
-  "split_scenes",
-  "auto_clip"
-]New value: +[
+  "place",
+  "trim",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_delete",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings",
+  "snapshot",
+  "snapshot_restore",
+  "revision_restore",
+  "comment",
+  "comment_resolve",
+  "marker_add",
+  "marker_edit",
+  "marker_delete",
+  "freeze",
+  "reverse",
+  "clip_look",
+  "split_scenes",
+  "auto_clip",
+  "sound_role",
+  "sound_mix"
+]

Added value: +{
+  "description": "sound_mix: seconds the music takes to come back after a voice ends (default 1.6).",
+  "type": "number"
+}

Added value: +{
+  "description": "sound_role: Voice (narration, dialogue), Music (beds, songs) or Effect (whooshes, hits, dings). Music dips under voices when the project ducks; effects never dip and go silent when sound effects are off.",
+  "enum": [
+    "voice",
+    "music",
+    "effect"
+  ],
+  "type": "string"
+}

Removed value: -60

Added value: +{
+  "description": "lane_settings on an audio track: true = the track is silent in the player and the export (its M button); false turns it back on.",
+  "type": "boolean"
+}

Previous value: -"clip_settings: false disables the clip (it stays on the lane, skipped in play and export)."New value: +"clip_settings: false disables the clip (it stays on the track, skipped in play and export)."

Previous value: -"lane_settings: hide the lane (on an audio lane this mutes it)."New value: +"lane_settings: hide the track (on an audio track this mutes it)."

Previous value: -"Which clip on that lane, counting from 0 in play order (read_editor_timeline shows the index of every clip)."New value: +"Which clip on that track, counting from 0 in play order (read_editor_timeline shows the index of every clip)."

Previous value: -"lane_add: which kind of lane. lane_delete: remove a lane and its clips (not V1, not the text lane). snapshot: save a restorable snapshot of the whole project (name). snapshot_restore / revision_restore: put the project back as a snapshot or a History revision had it. comment: a note in the Comments pane (text, optionally lane + index or at_sec). comment_resolve: mark it resolved. marker_add: a marker on the ruler (at_sec, text, color teal / purple / rose / peach / orange / white). marker_edit / marker_delete: move, relabel or remove one (marker_id). freeze: hold the clip's first frame for its whole length. reverse: play the clip backwards, picture and sound. fades on a video clip: the picture fades in and out (its sound follows through its linked sound clip). clip_look: colour on ONE clip (lane, index, filters as in look, or reset). lane_settings solo on an audio lane: only solo lanes play and export. split_scenes: cut one clip at many seconds at once (lane, index, at_secs). auto_clip: the AI clipper's step, pieces of a media item (segments) laid in a row on V1 from at_sec or the end."New value: +"lane_add: which kind of track. lane_delete: remove a track and its clips (not V1, not the text track). snapshot: save a restorable snapshot of the whole project (name). snapshot_restore / revision_restore: put the project back as a snapshot or a History revision had it. comment: a note in the Comments pane (text, optionally lane + index or at_sec). comment_resolve: mark it resolved. marker_add: a marker on the ruler (at_sec, text, color teal / purple / rose / peach / orange / white). marker_edit / marker_delete: move, relabel or remove one (marker_id). freeze: hold the clip's first frame for its whole length. reverse: play the clip backwards, picture and sound. fades on a video clip: the picture fades in and out (its sound follows through its linked sound clip). clip_look: colour on ONE clip (lane, index, filters as in look, or reset). lane_settings solo on an audio track: only solo tracks play and export. split_scenes: cut one clip at many seconds at once (lane, index, at_secs). auto_clip: the AI clipper's step, pieces of a media item (segments) laid in a row on V1 from at_sec or the end."

Previous value: -"The lane the clip is on, as the Editor names it: V1, X2 (a video lane above V1), A1, A2, T1, M1, G1."New value: +"The track the clip is on, as the Editor names it: V1, X2 (a video track above V1), A1, A2, T1, M1, G1."

Previous value: -"lane_settings: lock the lane against edits."New value: +"lane_settings: lock the track against edits."

Previous value: -"lane_add / lane_settings: the lane's name as it reads on screen."New value: +"lane_add / lane_settings: the track's name as it reads on screen."

Previous value: -"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip."New value: +"What to do. place: a media item of the project onto a track at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip."

Previous value: -"link: the other clip's lane."New value: +"link: the other clip's track."

Previous value: -"logo: size, 1 to 200 (default 74). clip_settings: 0 to 300 (on a second-lane video, 100 = a third of the frame wide)."New value: +"logo: size, 1 to 200 (default 74). clip_settings: 0 to 300 (on a second-track video, 100 = a third of the frame wide)."

Previous value: -"lane_settings on an audio lane: true = only solo lanes play and export; false takes it off."New value: +"lane_settings on an audio track: true = only solo tracks play and export; false takes it off."

Previous value: -"move: another lane of the same kind."New value: +"move: another track of the same kind."

Previous value: -"text: centre across the frame, 0 (left) to 100 (right), default 50. logo: offset, default 0. clip_settings on a second-lane video: the player puts its centre at 72 + x/10 percent (x -220, y 220, scale 294 = full frame)."New value: +"text: centre across the frame, 0 (left) to 100 (right), default 50. logo: offset, default 0. clip_settings on a second-track video: the player puts its centre at 72 + x/10 percent (x -220, y 220, scale 294 = full frame)."

Previous value: -"logo: an https link to the picture (or pass media_name of a picture in the project)."New value: +"logo: an https link to a PNG, JPEG, WebP or GIF; Switch keeps its own copy in the project (or pass media_name of a picture in the project)."

Previous value: -"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url or media_name, at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip."New value: +"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url, an https PNG, JPEG, WebP or GIF that Switch copies into the project, or media_name; at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip."

Previous value: -"logo: size, 1 to 200 (default 74)."New value: +"logo: size, 1 to 200 (default 74). clip_settings: 0 to 300 (on a second-lane video, 100 = a third of the frame wide)."

Previous value: -"text: centre across the frame, 0 (left) to 100 (right), default 50. logo: offset, default 0."New value: +"text: centre across the frame, 0 (left) to 100 (right), default 50. logo: offset, default 0. clip_settings on a second-lane video: the player puts its centre at 72 + x/10 percent (x -220, y 220, scale 294 = full frame)."

Added value: +{
+  "description": "split_scenes: timeline seconds to cut the clip at (find_editor_scenes gives seconds in the file; add the clip's start).",
+  "items": {
+    "type": "number"
+  },
+  "type": "array"
+}

Previous value: -"look: colour controls to set, e.g. { exposure: 10, contrast: 8, temp: -5 }; null resets one. Controls: exposure, contrast, highlight, shadow, whites, blacks, temp, tint, saturate, vibrance, brilliance, sharpen, clarity, blur, fade, vignette, grain, halation."New value: +"look / clip_look: colour controls to set, e.g. { exposure: 10, contrast: 8, temp: -5 }; null resets one. Controls: exposure, contrast, highlight, shadow, whites, blacks, temp, tint, saturate, vibrance, brilliance, sharpen, clarity, blur, fade, vignette, grain, halation."

Previous value: -"lane_add: which kind of lane. lane_delete: remove a lane and its clips (not V1, not the text lane). snapshot: save a restorable snapshot of the whole project (name). snapshot_restore / revision_restore: put the project back as a snapshot or a History revision had it. comment: a note in the Comments pane (text, optionally lane + index or at_sec). comment_resolve: mark it resolved. marker_add: a marker on the ruler (at_sec, text, color teal / purple / rose / peach / orange / white). marker_edit / marker_delete: move, relabel or remove one (marker_id)."New value: +"lane_add: which kind of lane. lane_delete: remove a lane and its clips (not V1, not the text lane). snapshot: save a restorable snapshot of the whole project (name). snapshot_restore / revision_restore: put the project back as a snapshot or a History revision had it. comment: a note in the Comments pane (text, optionally lane + index or at_sec). comment_resolve: mark it resolved. marker_add: a marker on the ruler (at_sec, text, color teal / purple / rose / peach / orange / white). marker_edit / marker_delete: move, relabel or remove one (marker_id). freeze: hold the clip's first frame for its whole length. reverse: play the clip backwards, picture and sound. fades on a video clip: the picture fades in and out (its sound follows through its linked sound clip). clip_look: colour on ONE clip (lane, index, filters as in look, or reset). lane_settings solo on an audio lane: only solo lanes play and export. split_scenes: cut one clip at many seconds at once (lane, index, at_secs). auto_clip: the AI clipper's step, pieces of a media item (segments) laid in a row on V1 from at_sec or the end."

Added value: +{
+  "description": "freeze / reverse: true (default) turns it on, false turns it off.",
+  "type": "boolean"
+}

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_delete",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look",
-  "transition",
-  "keyframe",
-  "keyframes_clear",
-  "clip_settings",
-  "snapshot",
-  "snapshot_restore",
-  "revision_restore",
-  "comment",
-  "comment_resolve",
-  "marker_add",
-  "marker_edit",
-  "marker_delete"
-]New value: +[
+  "place",
+  "trim",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_delete",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings",
+  "snapshot",
+  "snapshot_restore",
+  "revision_restore",
+  "comment",
+  "comment_resolve",
+  "marker_add",
+  "marker_edit",
+  "marker_delete",
+  "freeze",
+  "reverse",
+  "clip_look",
+  "split_scenes",
+  "auto_clip"
+]

Previous value: -"look: true clears every colour value and the film stock."New value: +"look: true clears every colour value and the film stock. clip_look: true clears the clip's own colour."

Added value: +{
+  "description": "auto_clip: pieces of the file (seconds in the file) to lay in a row on V1.",
+  "items": {
+    "properties": {
+      "from_sec": {
+        "type": "number"
+      },
+      "to_sec": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "from_sec",
+      "to_sec"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "lane_settings on an audio lane: true = only solo lanes play and export; false takes it off.",
+  "type": "boolean"
+}

Previous value: -"text: the colour as #rrggbb."New value: +"text: the colour as #rrggbb. marker_add / marker_edit: teal, purple, rose, peach, orange or white."

Added value: +{
+  "description": "comment_resolve: the comment id (history.comments).",
+  "type": "string"
+}

Previous value: -"lane_add: which kind of lane. lane_delete: remove a lane and its clips (not V1, not the text lane)."New value: +"lane_add: which kind of lane. lane_delete: remove a lane and its clips (not V1, not the text lane). snapshot: save a restorable snapshot of the whole project (name). snapshot_restore / revision_restore: put the project back as a snapshot or a History revision had it. comment: a note in the Comments pane (text, optionally lane + index or at_sec). comment_resolve: mark it resolved. marker_add: a marker on the ruler (at_sec, text, color teal / purple / rose / peach / orange / white). marker_edit / marker_delete: move, relabel or remove one (marker_id)."

Added value: +{
+  "description": "marker_edit / marker_delete: the marker id (read_editor_timeline lists markers).",
+  "type": "string"
+}

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_delete",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look",
-  "transition",
-  "keyframe",
-  "keyframes_clear",
-  "clip_settings"
-]New value: +[
+  "place",
+  "trim",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_delete",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings",
+  "snapshot",
+  "snapshot_restore",
+  "revision_restore",
+  "comment",
+  "comment_resolve",
+  "marker_add",
+  "marker_edit",
+  "marker_delete"
+]

Added value: +{
+  "description": "comment_resolve: false reopens the comment (default true).",
+  "type": "boolean"
+}

Added value: +{
+  "description": "revision_restore: the revision id (history.revisions).",
+  "type": "string"
+}

Added value: +{
+  "description": "revision_restore: restore the project as it was before the revision (default) or after it.",
+  "enum": [
+    "before",
+    "after"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "snapshot_restore: the snapshot id (read_editor_timeline lists history.snapshots).",
+  "type": "string"
+}

Previous value: -"lane_add: which kind of lane."New value: +"lane_add: which kind of lane. lane_delete: remove a lane and its clips (not V1, not the text lane)."

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look",
-  "transition",
-  "keyframe",
-  "keyframes_clear",
-  "clip_settings"
-]New value: +[
+  "place",
+  "trim",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_delete",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings"
+]

Added value: +{
+  "description": "keyframe: the time inside the clip (seconds from its start) to pin scale, x, y, rotation, opacity at.",
+  "type": "number"
+}

Added value: +{
+  "description": "clip_settings: false disables the clip (it stays on the lane, skipped in play and export).",
+  "type": "boolean"
+}

Added value: +{
+  "description": "clip_settings: contain = fit to frame, cover = fill frame.",
+  "enum": [
+    "contain",
+    "cover"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "look: the Design pane mask { enabled, shape (split, filmstrip, circle, rectangle), x, y, width, height, rotation, feather }.",
+  "type": "object"
+}

Previous value: -"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url or media_name, at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters), a film stock (film_stock, intensity) or reset."New value: +"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url or media_name, at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters, including curves curveLuma/curveR/curveG/curveB and the wheels wheelShadHue/Sat, wheelMidHue/Sat, wheelTintHue/Sat, wheelOffHue/Sat, wheelIntensity), a film stock (film_stock, intensity), a mask, or reset. transition: the outgoing transition of a clip (transition, duration_sec). keyframe: pin scale, x, y, rotation, opacity at at_clip_sec; keyframes_clear removes them. clip_settings: scale, x, y, rotation, opacity, fit, enabled, name, tag on a clip."

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_reorder",
-  "lane_settings",
-  "text",
-  "text_edit",
-  "text_delete",
-  "caption",
-  "logo",
-  "motion",
-  "look"
-]New value: +[
+  "place",
+  "trim",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look",
+  "transition",
+  "keyframe",
+  "keyframes_clear",
+  "clip_settings"
+]

Added value: +{
+  "description": "keyframe / clip_settings / text: degrees, -180 to 180.",
+  "type": "number"
+}

Added value: +{
+  "description": "clip_settings: the label colour from the clip menu: magenta, teal, mustard, blue, orange, violet, green, coral, or none.",
+  "type": "string"
+}

Added value: +{
+  "description": "transition: the outgoing transition as the menu names it: None (hard cut), Cross fade, Dissolve, Wipe left, Wipe right, Wipe up, Wipe down, Slide left, Slide right, Circle open; with duration_sec 0.1 to 2.",
+  "type": "string"
+}

Added value: +{
+  "description": "text: alignment.",
+  "enum": [
+    "left",
+    "center",
+    "right"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "text: { on, color, opacity, radius } a box behind the words.",
+  "type": "object"
+}

Added value: +{
+  "description": "motion: the motion block id (read_editor_timeline lists motionBlocks).",
+  "type": "string"
+}

Added value: +{
+  "description": "caption: the spoken words with their times, one entry per caption.",
+  "items": {
+    "properties": {
+      "at_sec": {
+        "type": "number"
+      },
+      "duration_sec": {
+        "type": "number"
+      },
+      "text": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "text",
+      "at_sec"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "text: the colour as #rrggbb.",
+  "type": "string"
+}

Added value: +{
+  "description": "look: a film stock from the Design pane (K-400, Portra 160, Superia 400, Ektar 100, Cinestill 800T, Tri-X 400, HP5, VHS, Super 8, Polaroid 600, Bleach Bypass, None).",
+  "type": "string"
+}

Added value: +{
+  "description": "look: colour controls to set, e.g. { exposure: 10, contrast: 8, temp: -5 }; null resets one. Controls: exposure, contrast, highlight, shadow, whites, blacks, temp, tint, saturate, vibrance, brilliance, sharpen, clarity, blur, fade, vignette, grain, halation.",
+  "type": "object"
+}

Added value: +{
+  "description": "text: the font, as the Text pane names it.",
+  "enum": [
+    "System",
+    "Inter",
+    "Playfair Display",
+    "JetBrains Mono",
+    "Bebas Neue"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "logo: an https link to the picture (or pass media_name of a picture in the project).",
+  "type": "string"
+}

Added value: +{
+  "description": "look: film stock strength 0 to 100 (default 80).",
+  "type": "number"
+}

Previous value: -"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked)."New value: +"What to do. place: a media item of the project onto a lane at a time. trim: new start_sec and/or end_sec for a clip (the cut moves in the file; it cannot reach past the file). split: cut a clip at at_sec (its sound clip splits too). move: a clip to to_sec (and to_lane of the same kind). delete / ripple_delete: remove a clip (ripple closes the gap). duplicate: a copy right after the clip. link / unlink: a picture clip and a sound clip that move together. speed (rate), volume (db), fades (fade_in_sec, fade_out_sec). lane_add (kind), lane_reorder (lane, to_index), lane_settings (lane, name, hidden, locked). text: words on the picture from at_sec for duration_sec, with font, size, color, x, y, align, preset, background, stroke, shadow (a pink chip on T1). text_edit / text_delete by text_id. caption: captions on the spoken words (captions list, template, position). logo: a picture over the frame on G1 (image_url or media_name, at_sec, duration_sec, x, y, scale, opacity). motion: a motion block on M1 (block_id, at_sec, duration_sec). look: the Design pane colour controls (filters), a film stock (film_stock, intensity) or reset."

Previous value: -[
-  "place",
-  "trim",
-  "split",
-  "move",
-  "delete",
-  "ripple_delete",
-  "duplicate",
-  "link",
-  "unlink",
-  "speed",
-  "volume",
-  "fades",
-  "lane_add",
-  "lane_reorder",
-  "lane_settings"
-]New value: +[
+  "place",
+  "trim",
+  "split",
+  "move",
+  "delete",
+  "ripple_delete",
+  "duplicate",
+  "link",
+  "unlink",
+  "speed",
+  "volume",
+  "fades",
+  "lane_add",
+  "lane_reorder",
+  "lane_settings",
+  "text",
+  "text_edit",
+  "text_delete",
+  "caption",
+  "logo",
+  "motion",
+  "look"
+]

Added value: +{
+  "description": "logo / text: 0 to 100.",
+  "type": "number"
+}

Added value: +{
+  "description": "caption: where the captions sit.",
+  "enum": [
+    "top",
+    "middle",
+    "bottom"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "text: a style preset from the Text pane.",
+  "enum": [
+    "white",
+    "outline",
+    "subtle",
+    "shadow",
+    "yellow",
+    "red"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "look: true clears every colour value and the film stock.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "logo: size, 1 to 200 (default 74).",
+  "type": "number"
+}

Added value: +{
+  "description": "text: { on, color } a drop shadow.",
+  "type": "object"
+}

Added value: +{
+  "description": "text: font size 12 to 200.",
+  "type": "number"
+}

Added value: +{
+  "description": "text: { on, color, thickness } an outline.",
+  "type": "object"
+}

Added value: +{
+  "description": "caption: the caption template as the Captions menu names it.",
+  "enum": [
+    "Highlight",
+    "Pop",
+    "Bounce",
+    "Hype",
+    "Stroke",
+    "Marker",
+    "clean"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "text / text_edit: the words on screen.",
+  "type": "string"
+}

Added value: +{
+  "description": "text_edit / text_delete: the text layer id (read_editor_timeline lists textLayers).",
+  "type": "string"
+}

Added value: +{
+  "description": "text: 100 to 900 (700 bold).",
+  "type": "number"
+}

Added value: +{
+  "description": "text: the box width as a percent of the frame (default 40).",
+  "type": "number"
+}

Added value: +{
+  "description": "text: centre across the frame, 0 (left) to 100 (right), default 50. logo: offset, default 0.",
+  "type": "number"
+}

Added value: +{
+  "description": "text: centre down the frame, 0 (top) to 100 (bottom), default 50. logo: offset, default -92 (top).",
+  "type": "number"
+}