.IF
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Generates code that tests condition1 (for example, AX > 7) and executes the statements if that condition is true.
Syntax
.IF condition1
statements
[[.ELSEIF condition2
statements]]
[[.ELSE
statements]]
.ENDIF
Remarks
If a .ELSE follows, its statements are executed if the original condition was false. Note that the conditions are evaluated at run time.