PCI Directives and variables are not case-sensitive and can be identified by their prefix. Here is a list of prefixes and other syntax used within the PCI system:
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% |
PCI directive prefix, for example %ASKBOX |
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$ |
String variable prefix, for example $array |
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X@ |
Digitised position variable prefix, holding the X co-ordinate |
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Y@ |
Digitised position variable prefix, holding the Y co-ordinate |
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Z@ |
Digitised position variable prefix, holding the Z co-ordinate |
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& |
System variable prefix, for example &PLUNGEFEED |
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# |
Read-only variable prefix, for example #FREEDIG |
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* |
Comment line, not processed by the PCI system, for example * This is a comment line |
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[ ] |
Use the contents of these brackets, for example
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( ) |
Perform an operation in these brackets first, as in standard mathematical notation |