Expert Sleepers Crossfade Loop Synth v3.2.0 - Manual (Page 25)

/stopNote i:note f:velocity
Stops playback of a note - equivalent of a MIDI note off message.
‘note’ is the MIDI note number; ‘velocity’ should be between 0.0 and 1.0. E.g.
/stopNote 60 0.0
Note that the plug-in currently does not respond in any way to note off velocity.
/loadSample s:filename
Loads the given sample file - exactly as if the user had pressed the ‘Load Sample’ button
and chosen the file from the dialogue. E.g.
/loadSample “/Users/sleeper/audio/samples/moo.aiff”