| end | No | linear only: last base of the window to draw (1-based, inclusive); left unset, the record's last base. In bp. Only applies when layout is linear. | |
| font | No | figure font — one of the three stacks that survive an SVG-to-PDF conversion without substitution. | sans |
| size | No | square canvas edge, before a legend strip is added below it. In px. | |
| start | No | linear only: first base of the window to draw (1-based); left unset, the record's first base. In bp. Only applies when layout is linear. | |
| title | No | figure title; left empty, the record's own name is used. | |
| _files | No | The project: record references shaped like _subject. Their records become library documents a tool names in sequences/parts/document; a trace or alignment is found by file name. | |
| layout | No | circular: the ring; linear: the record unrolled into rows, features in lanes under a ruler and sites above it. | circular |
| legend | No | add a colour key on its own strip below the map. | |
| enzymes | No | enzymes whose cut sites fill the site ring — resolved against the bundled cut catalog (REBASE spellings; smaller than the REBASE dossier the editor shows). Left unset, the run uses your active enzyme collection; with none active the ring is drawn empty rather than silently filled. | |
| _subject | No | The record to act on: exactly one of sequence, accession (+source), sample (an id from list_samples) or file ({name, text} or {name, base64}); record_index picks one record of several. | |
| show_bases | No | linear only: draw both strands' bases over the ruler; rows wrap to keep each base readable. Only applies when layout is linear. | |
| show_sites | No | draw the outer restriction-site ring. | |
| show_labels | No | draw each feature's name beside its arc. | |
| transparent | No | omit the backing rect, so the figure drops onto any ground. | |
| collapse_duplicate_labels | No | fold leader labels that would repeat a name into one row, as `misc_binding ×13` — the same rule the interactive map uses. Off reproduces the upstream renderer's figure exactly, one leader per feature. | |