## Description

Brief description of what this PR does.

## Motivation and Context

Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here.

Fixes #(issue)

## How Has This Been Tested?

Please describe the tests that you ran to verify your changes:
- [ ] All existing tests pass
- [ ] Added new tests for new functionality
- [ ] Tested with example programs
- [ ] Tested with different input methods (visual, keyboard, ASCII escapes)

## Types of changes

What types of changes does your code introduce? Check all that apply:
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)
- [ ] Documentation update
- [ ] Grammar modification
- [ ] New symbol/operator

## Checklist

- [ ] My code follows the code style of this project
- [ ] My change requires a change to the documentation
- [ ] I have updated the documentation accordingly
- [ ] I have added tests to cover my changes
- [ ] All new and existing tests passed
- [ ] I have updated CHANGELOG.md in the Unreleased section
- [ ] My changes pass the Fatima Test (understandable by non-English speakers)

## MPL-Specific Considerations

### For new symbols/operators:
- [ ] Symbol has clear mathematical meaning
- [ ] ASCII escape sequence provided
- [ ] Added to glyph-escapes.md
- [ ] Precedence defined and tested
- [ ] Example usage provided

### For grammar changes:
- [ ] No shift/reduce conflicts introduced
- [ ] Precedence table updated if needed
- [ ] Backwards compatibility maintained

## Additional Notes

Any additional information that reviewers should know.