make it possible to have an arrow not named

[pirad]

It would be nice if I could give not every edge/arrow a name and could just have arrows from one box to an other.

[acanas]

If you had checked the FAQ, you would have found the following:

viewtopic.php?f=3&t=10

Concept maps, by definition, have linking phrases in the connecting line. You can use CmapTools to create other types of diagrams, but its intended to be used to create concept maps.