.IF

Directive opening conditional assemblacia.

Syntax:

    .IF expr

Example:

    .IF . REF(alpha)    ; if there was a return to the label 'alpha'
    .IF a==5        ; if the label 'a' has a value of 5
    .IF b            ; if label 'b' has a non-err on-label value
    .IF %0>2        ; if you have exported a macro with more than two
                ; Parameters