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

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

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Language Processors
Bug means

All of these
A difficult syntax error in a program
A logical error in a program
Documenting programs using an efficient documentation tool

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