- better text size guessing
- hierarchical labels
- sub-sheets
- unify alignment, direction
- support fonts attributes ?
- support line thickness ?
- ~ as space (grep for ~ in out.fig)
- ~ as overline (grep for ~ in out.fig)
- glabel: build for "right" style, then rotate poly
- break into file reading, internal storage, rendering
- show open pins / wires
- check remaining alignment / direction / rotation cases in switch statements
- convert abort / assert(0) to proper error indications
- support mirroring (and detect-complain if unexpected)