mfman.mf, lines 1272 and 1274:
labels.top(2r,2,2l, ...
labels.bot(2r,2,2l, ...
As a result, the top middle of Figure 14e has these points labeled twice:
________ ________
__-- | 2r | --__
__ | . | __
__--- | | 2r | | ---__
- | | 2 | | -
| | . | |
| | 2 | |
| | 2l | |
| | . | |
| | 2l | |
(Not sure if C139 is correct...)