06 utilities

This document describes four utilities designed for DECsystem-10 system programmers:

1. CREF (Cross-Reference Listing): This utility generates sequence-numbered assembly listings along with cross-reference tables for operand-type symbols, user-defined operators, and op codes/pseudo-op codes. It processes modified assembly listing files created during MACRO-10 assembly or FORTRAN IV compilation, serving as an invaluable aid for program debugging and modification.
2. FILCOM (File Compare): This program compares two versions of a file and outputs any detected differences. It can perform line-by-line comparisons for ASCII files or word-by-word comparisons for binary files, with various switches to control the comparison mode (e.g., partial compares, ignoring blank lines/comments, or generating an "update mode" output with change bars).
3. FUDGE2 (File Update/Manipulation): This utility is used to update files containing relocatable binary modules and to manipulate individual modules within these files. It supports operations like appending, compressing (deleting local symbols), deleting, extracting, inserting, listing, replacing modules, and writing index blocks, primarily to enable the creation and maintenance of program libraries.
4. GLOB (Global Symbol Lister): This program reads multiple binary program files and produces an alphabetical cross-referenced list of all global symbols encountered. It can also operate in library search mode and offers various output options, such as listing only erroneous, non-relocatable, unreferenced, or multiply-defined symbols.