In some cases, the CNC machine can use the concept of modality to avoid redundant data and reduce the length of the program. When using modality, repeated coordinates or commands are 'stripped' from the part program, and are output only if they change.
String and Numeric reserved words may be surrounded by modality delimiters { }, to signify to XBUILD to remove redundant data. The modality delimiter prevents a repetitive occurrence of a reserved word as long as its value remains the same as the previous occurrence of it.
For example, when modality delimiters are used in {<SEQ>}, you have an option of 'stripping' all sequence numbers from the program during post processing. This is done by specifying 0 for the start and sequence step numbers in XBUILD. This forces the sequence numbering to remain the same.
Modality brackets may be used on expressions containing reserved words, for example: {X[<ABS-DEPTH>*2]}.
To place a reserved word inside modality brackets, select Modal Delimiters:
