Language Processors
Job Control Language (JCL) statements are Used to

All of these
Specify, to the operating system, the beginning and end of a job in a batch
Read the input from the slow-speed card reader to the high-speed magnetic disk
Allocate the CPU to a job

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Language Processors
In analyzing the compilation of PL/I program, the term "Syntax analysis" is associated with

recognition of basic syntactic constructs through reductions
use of macro processor to produce more optimal assembly code
recognition of basic elements and creation of uniform symbols
creation of more optional matrix

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Language Processors
The system/370 assembler language

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
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

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Language Processors
Terminal Table

a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
a permanent table which lists all key words and special symbols of the language in symbolic form
contains all constants in the program
consists of a full or partial list of the tokens as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

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

many functions do not have to be implemented twice
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
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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