See the following listing for an example Test1.inc include file.
XREF AddSource ; The AddSource function adds the value stored in the variable ; Source to the contents of the A register. The result of the ; computation is stored in the Source variable. ; ; Input Parameter: The A register contains the value that should be ; added to the Source variable. ; Output Parameter: Source contains the result of the addition. XREF Source ; The Source variable is a 1-byte variable.