This is true if Text-Argument-1 and Text-Argument-2 are different in a case-sensitive comparison.
Syntax
IFDIF Text-Argument-1, Text-Argument-2Remarks
Both Text-Argument arguments must be specified. An error is generated if a either argument is not supplied.
In the following example:
IFDIF <EAGLES>,<Eagles> value = 1 ENDIF
the condition would be true; the arguments are different because they are compared with a case-sensitive algorithm.