maieul/ledmac — pull request #201 by rrthomas (2014-08-27 18:17:03+00:00)
Title: Fix description of stretchable lengths

This previously seemed wrong both in the syntax (two `minus`es rather than one `plus` and one `minus`) and in the mathematical inequality, which I've corrected to match my formulation of the syntax; but both could be done differently.