Ref: Your note of Mon, 11 Dec 2017 14:29:34 +1100 Most macro languages (including those of C and PL/I) are like a text processor which runs independently before the main compiler pass. The HLASM macro language is unusual in that it can interact with the information obtained by the first pass of the assembler, and can even cause "lookahead" to determine the probable attributes of items which have not yet been defined.
Jonathan Scott HLASM team, IBM Hursley, UK
