sound: fade_sound takes a duration (fade-unit-argument)
W0: new page (warp types, the rule, holes); parallel let without let; sound: spectrum, MIDI input planned; examples: whole programs
sound: notes and melodies, use sound rule, music words, synth settings and effects, timing and voices, fade, patterns and live loops, MIDI
sound: link the siren and stereo samples
docs: sound: Signals, a function of the time and a block function played in real time (the former samples signal and signal_blocks)