PLUG, NOPLUG
    

There are two modes for responding to errors that the macro processor finds, PLUG and NOPLUG:

-    Using the default, NOPLUG, the macro processor stops when it encounters an error.

-    If you use PLUG, then the macro processor "plugs away" the best it can even when an error is encountered. In general, the macro routines that have errors will terminate but execute routines that are okay. PLUG can produce strange results, but at times PLUG can help you debug your program.

You can use PLUG or NOPLUG before you invoke a macro or anywhere within the body of a macro.