Tracker 4.42

## 8.5: How to set sample numbers and note periods

There has to exist a separate automaton for each of the four channels of a Protracker song. To have a sample number != 0 means to load a number of parameters from the sample information:

- its default volume (special case: see Set volume)
- its finetune (see Protracker finetunes, see Set finetune, for the extended finetune command)

Likewise, to have a note period different from 0 means to change the note period immediately, except for the Tone portamento and Tone portamento + Volume slide commands.