Hello.
I have a suggestion to make , one that I think it would improve working both in 3d and 2d.
I know that input from the users is always welcome for the team from Geosystem.
The idea comes because sometimes, especially when working in large scales (1/500, 1/1000) the object intended for snapping is much far from the point where the user wants to start the line than other elements. As an example , if we want to draw stairs for entering a building that is drawn on the roof, it is almost impossible to make the snap to the roof at the height of the street (where the stairs are).
My suggestion is to cycle between some objects that could be targets to the snap operation , chosen in an X,Y neighbourhood, disregarding their Z (the elements list could be similar to the one in the extended selection, but without the GUI). This cycling should occur each time the same snap key is pressed (I, P, L) for the start of line until the next line vertex is registered with "click".
I want to use the oportunity to say thanks to Geosystem for their efforts to continuosly improve the software and the way they keep in touch with users and resellers.
Alin Chitu
SC Inteligis SRL
Ramnicu Valcea, Romania
http://www.inteligis.ro