First of all: revision 1981 is mine, what is important me because I was born in 1981. But what is new in my revision? If you drag nodes with left button, edge-breakpoints do not change location. If you drag nodes by right button, they do, they take up their base situation at the halfpoint of the edge.
2 Title: LEMON Reference Manual
3 Author: LEMON Development Team
4 Abstract: Documentation of LEMON.
8 Index: /usr/share/doc/lemon/html/index.html
9 Files: /usr/share/doc/lemon/html/*.html