Reading edited macros (z/VSE® only)
An E-Deck refers to a macro source book of type E that can be used as the name of a macro definition to process in a macro instruction. E-Decks are stored in edited format, however High Level Assembler requires library macros to be stored in source statement format. You can use the LIBRARY exit to analyze a macro definition, and, in the case of an E-Deck, call the z/VSE/ESA ESERV program to change, line by line, the E-Deck definition back into source statement format.
See the subsection Using the High Level Assembler Library Exit for Processing E-Decks, in Chapter 4 Using VSE Libraries, section High Level Assembler Considerations, in VSE/ESA Guide to System Functions. This section describes how to set up a LIBRARY exit and use it to process E-Decks.