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

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

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Language Processors
A self-relocating program is one which

All of these
cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation
consists of a program and relevant information for its relocation
can itself perform the relocation of its address-sensitive portions

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