Language Processors
The advantage(s) of incorporating the macro processor into pass 1 is/ are:

Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler
All of these
many functions do not have to be implemented twice
more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros

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Language Processors
The system/370 assembler language

is a term that refers to the control programs of an operating system
allows multiple programs to reside in separate areas of core at the same time
allows the programmer to write base registers and displacements explicitly in the source program
is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain

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