edge(x) — once when it becomes true
changed(x) — when the number changes (first tick is quiet)
every(sec) — repeat while true (first tick only arms)
cooldown(sec) — true immediately, then quiet for N s
held(x, sec) — true after the condition holds
at("HH:MM") — once per day
hyst(val, on, off) — gap between on and off
sunrise() sunset() — HHMM, or 9999 if no weather
between(sunrise(), sunset()) — daylight
tg: 1 per tick, 12 per hour. log: 3 per tick.
Script ≤ 6144 bytes. Slots: 32 (edge/every/held/at/changed/cooldown/hyst).
expose 800–807 is RAM (DS18B20 may already use 800+).