Complete reference for the Graphviz DOT language — grammar, statements, identifiers, graph/node/edge/subgraph attributes, colors, ports, engines, and lexical edge cases — as accepted by the pure-Hoon %graph-viz renderer.
API reference for the %graph-viz Gall agent — the stateless subscribe-then-poke protocol, %gviz-command/%gviz-result marks, $command/$render-opts/$result/$err/$diag types, the run:lib gate, and the positioned-graph noun.
Practical recipes and best practices for %graph-viz — rendering from Hoon, building graphs programmatically, worked diagram templates (org charts, dependency/architecture/state/data-flow/UML), styling and accessibility guidance, performance limits, pitfalls, integration (clay/caching), and debugging with verbose diagnostics.
High-level orientation to the tlaplus/tlaplus repository (TLA+ CLI tools + Eclipse Toolbox IDE), its tool entrypoints, and which sibling skill to use for a given task. Use when first interacting with the TLA+ toolchain repo, deciding between CLI/editor/build paths, or routing to the right tlaplus-* skill. Points to the shared external-link inventory and source-map for the whole pack.
Build, package, test, and develop the TLA+ tools and Toolbox locally or in CI - Ant targets for tla2tools.jar, Maven/Tycho for the Toolbox, the test-set/test targets, the devcontainer, and the GitHub CI matrix. Use to compile the jar, run the test suite or a single test, set up a dev environment, or understand the CI pipeline. Owns every ant/mvn command line for the pack.
Follow the tlaplus/tlaplus contribution conventions - engage maintainers early, make surgical diffs, write tests first, split PRs, use commit categorization tags and DCO sign-off. Use before any edit or PR, when authoring tests/docs, or crafting commit messages for this repo. For the mechanics of building/running tests see tlaplus-build-workflow.
Diagnose and recover from TLA+ failures - parse/level errors, config (.cfg) errors, TLC runtime errors, safety (invariant) and liveness violations, deadlock, and out-of-memory; analyze counterexample traces. Use for any SANY/TLC failure, opaque error, or trace/counterexample work. Owns the TLC/SANY error-code taxonomy for the pack.
Configure and run the TLC model checker (exhaustive or simulation), write .cfg model files, and interpret run statistics and outcomes. Use for any model-checking task - running a spec, adding a regression model, choosing INVARIANT vs PROPERTY, reading state counts/diameter, or exporting traces as JSON/DOT. For diagnosing failures see tlaplus-debugging.