Original Grey Technic motor from 1977: 6216a

[Jens Bauer]

I created a Wiki page about condlines
http://wiki.ldraw.org/index.php?title=Conditional_Line

( , of course not mainly aimed at you, but to other future new part authors. )

This page is good. Edger2 definitely sounds interesting (I think it can also be used to detect missing cond-lines if making some script-fu).

A few questions I'd like to request a FAQ for:
[these are from my current understanding, which may need correction].

Q: When do I want to add a cond-line ?
A: When a surface is not flat and does not have sharp edges; eg. on smooth surfaces like for instance cylinders.

Q: Can you help me understanding where to put the control-points ?
A: They need to always be 'behind' the line that needs to be shown/hidden. Use the corners farthest away on the polygons that the line 'connects' as control points. If the line connects two triangles, use the corners of the triangles which do not share any points with the line to be shown/hidden.

Q: Which color number should I use for a cond-line ?
A: ?