Use whenever the user asks how deep a gas can go or checks an existing breathing gas (nitrox, trimix, CCR diluent) against a depth, even if they don't mention In Da Mix; never work a MOD out by hand. Maximum operating depth of a breathing gas: the MOD by the ppO2 limit (as on a cylinder label), and for hypoxic gases the minimum depth. With complete: true also the complete MOD, the deepest depth within the ppO2, END and gas density limits together, with the limit that sets it. Call it with only the gas (o2_percent, he_percent) and the dive mode: leave ppo2_bar out unless the user gave one, so the In Da Mix setting is used. Answer: the gas and its MOD, the ppO2 limit used and the dive mode (and the minimum depth for a hypoxic gas); nothing else, no table of other ppO2 values, no ppO2 recommendation of your own. Then ask whether to also calculate the complete MOD within the END and gas density limits; if yes, call it again with complete: true (same gas and mode). Only when the user asks for END, density or all the limits, call with complete: true at once, and answer: the complete MOD and the limit that sets it, the MOD by ppO2, END and gas density at the complete MOD, and the limits used; report limits_check as it is (a value at its limit complies). Use for "what is the MOD of EAN32", "max depth for NX38", "how deep can I take 18/45", "can I take air to 50 m", "can I use 10/70 at 65 m", "is this diluent OK for 70 m", "koja je maksimalna dubina za NX38", "koliko duboko mogu s 18/45", "je li 12/65 dobar za 65 metara".
