Navigator Atlas
Change your Nonstop code with confidence
In a legacy Nonstop environment, every change carries hidden risk: a modified program can break callers nobody knew existed, and a renamed field can ripple through copybooks, paragraphs, and data flows that haven't been documented in years.
Navigator Atlas performs deterministic static analysis of your COBOL, SCOBOL, TAL, C/C++ and TACL source — mapping every call path, file access, and field reference — and gives you a complete impact picture in seconds.
Impact Analysis
Four questions. Answered instantly. Scan your folder once and select any program, file, or field.
1. Program change impact
If I change a program, what other programs are affected? Atlas traces direct and transitive callers and the programs that share files with it — the full blast radius before you write a line.
2. Dependencies
What libraries, files, and copybooks does this program touch? The Copybooks, Files, and Tables axes show every dependency — and flip the question: select a copybook and see every program that includes it.
3. File layout changes
If I change a file layout, what programs are affected? The File→Programs matrix lists every program that reads or writes it, with the exact CRUD operations (Create, Read, Update, Delete) each paragraph performs.
4. Field ripple effects
If I change a field, what are the ripple effects? The field cross-reference traces every variable in the record layout and shows exactly which paragraphs use it, with line number, type, and usage count.
