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 Function naming conventions
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 Assembler programmers note

 When calling from assembler you should add an underscore character `_' to
 the start of the function names in order to comply with C naming
 conventions.

 BASIC programmers note

 Blinker functions called from BASIC which receive string parameters or
 return string values have a different function name - the letters 'BAS' are
 appended to the normal nine character function name. For example, the BASIC
 version of BLIDEMDTE() is called BLIDEMDTEBAS().