Can any one explain this line of code %if &KEEP^= AND DROP^=

[deleted_user]

Can any one explain this line of code
%IF &KEEP^= AND DROP^=
Thanks in advance.

Regards,
Rupa.

[advoss]

Assuming that this code is in a macro and that DROP^= is actually &DROP^=

The line is checking to set if the macro variables (or macro symbols) KEEP and DROP are not equal to blank. If they are both nonblank, the code after %then gets executed/processed. Otherwise, it doesn't.