You use a SOURCE exit to replace or complement the assembler's primary input data set processing. You can use it to supply primary input records to the assembler, or monitor and modify records the assembler has read before the assembler processes them. The exit can supply all the primary input records, or extend the primary input by supplying additional records during the assembly. The exit can also discard records.

You use a LIBRARY exit to replace or complement the assembler's macro call (MACRO) and copy code (COPY) library processing. You can use it to supply MACRO and COPY library records to the assembler, or monitor and modify records the assembler has read before the assembler processes them. The exit can supply all the MACRO and COPY library records, or extend the library input processing by supplying additional MACRO and COPY records during the assembly. The exit can also discard records.

You use a LISTING exit to replace or complement the assembler's listing output processing. You can use it to write the listing records the assembler supplies, or monitor and modify the records before the assembler writes them to the listing data set. The exit can write all the listing records, or supply additional listing records for the assembler to write during the assembly. The exit can also discard records.

You use an OBJECT and PUNCH exit to replace or complement the assembler's object module output processing. You can use it to write the object module records the assembler supplies, or monitor and modify the records before the assembler writes them to the object data set. The exit can write all the object module records, or supply additional records for the assembler to write during the assembly. The exit can also discard records.

You use an ADATA exit to replace or complement the assembler's associated data output processing. You can use it to write the associated data records the assembler supplies, or monitor and modify the records before the assembler writes them to the associated data set. The exit can write all the associated data records, or supply additional records for the assembler to write during the assembly. The exit can also discard records.

You use a TERM exit to replace or complement the assembler's terminal output processing. You can use it to write the terminal records the assembler supplies, or monitor and modify the records before the assembler writes them. The exit can write all the terminal records, or supply additional terminal records for the assembler to write during the assembly. The exit can also discard records.

z/VSE

The assembler writes terminal output to SYSLOG; however, you can use the exit to write the output to a disk data set.