What problem does it solve? ASCII-art diagrams in markdown files often contain misaligned box corners, off-center arrows, and inconsistent box widths that break visual flow and look unprofessional. Manually finding and fixing these alignment errors across large documentation files is tedious and error-prone. ## Core Features & Use Cases - Nine Alignment Checks: Detects corner-to-wall misalignment, broken T-junctions, off-center arrows, inconsistent connector columns, mismatched stacked box widths, short header underlines, off-center section titles, misaligned header-content zones, and off-center text arrows. - Automatic Fixing: The --fix mode corrects fixable issues iteratively (up to 5 passes), extending borders, shifting arrows, and centering headers while preserving connector chains. - CI Integration: The --check --quiet mode returns exit code 1 when issues are found, making it suitable for pre-commit hooks and CI pipelines. - Use Case: Run the checker across all markdown documentation before a release to catch broken ASCII flowcharts, then auto-fix them in place and verify with the included test suite and fuzz tests. ## Quick Start Ask the assistant to check the markdown file for box-drawing alignment issues and automatically fix any problems found.