I thought it would be nice to be able to grab a vertex along an egde, that s to say by constraining the movement to the direction of the edge it is on.
¿It is possible?
i didnt understand .
but let me guess
ALT+Right click (Edit mode)
It sounds like you want to do the same as this thread.
http://blenderartists.org/forum/showthread.php?p=1486311#post1486311
Richard
or just apply loop cut to some faces…
you can constraint movement to an edge with
Ctrl-Alt c then move the vertex along that edge
and then come back to global mode afterward
hope it helps
salutations