Documenting BASIC

LegacyMap specializes in documenting OpenVMS BASIC applications, generating structured callgraphs and procedural maps to improve system visibility, reduce maintenance risk, and accelerate modernization efforts—without altering your existing codebase.

Documenting Legacy BASIC with Clarity

LegacyMap brings structure and visibility to OpenVMS BASIC applications by generating clear, interactive documentation—without requiring any changes to your codebase. Many BASIC systems remain business-critical, yet lack any formal documentation. We help you reclaim control of your legacy logic.

Our tools analyze procedural flow and logic within BASIC applications, extracting relationships between routines, identifying control structures, and mapping interdependencies. With LegacyMap, what was once hidden inside sprawling source code becomes visual, searchable, and easy to understand.

What LegacyMap Captures in BASIC

Callgraph Generation – Automatically build caller/callee trees from BASIC routines and subprograms.

Program Logic Mapping – Visualize execution paths, control flow, and inter-procedural relationships.

Modular Structure Documentation – Cross-reference procedures and subroutines across large applications.

Searchable Output – Export results as interactive HTML, PDF, or LaTeX using Doxygen-compatible formats.

Why Legacy Teams Use LegacyMap for BASIC

Onboard Developers Faster – Help new engineers understand program logic and structure in hours, not weeks.

Support Refactoring and Cleanup – Spot redundant code, tightly coupled logic, and long dependency chains.

Prepare for Modernization – Gain a clear map of your application’s logic before rewriting or migrating.

Reduce Technical Risk – Replace guesswork with facts—every procedure, every call, fully documented.

LegacyMap gives you the insight to maintain, modernize, and support your OpenVMS BASIC systems with confidence and control.

Generate documentation and callgraphs for OpenVMS BASIC systems.

Transform Your Legacy Software Today!

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