Support specification: Containing reference material similar in content to a system specification. This document is aimed at maintenance programmers, to help them solve and record problems, and to evaluate the effects of system changes. Typically, this document will include overview information, data-flow diagrams, entity models and file/program cross-references.

Program summaries: Containing a summary of the main functions of a program. Summaries for key program design and flag updates.

Programmer bibles: Containing additional information for programmers, such as source code control procedures, compilation and release procedures.

Operations information: Containing overviews of batch cycles, normal timings, escalation procedures, change control procedures and when to backup and restore files.