This is the normal method used to provide names for SWIs. It allows RISC OS to convert SWI number to names, and vice versa. The following is an assembler description of a typical SWI decoding table:
EQUS "Squash"+CHR$0
EQUS "Compress"+CHR$0
EQUS "Decompress"+CHR$0
EQUB 0
ALIGN
This defines two SWIs, named 'Squash_Compress' and 'Squash_Decompress'. They are assigned values of <SWI chunk>+0 and <SWI chunk>+1.
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