Add global variable $DIST, $ANG, $SUP and $SDOWN. For WASD key transformations.
Change command name "wire2plane" to "wire2face", it supports to make a surface.
And add an argument to "plane".
Add clipping plane command "clipon" and "clipoff".
Add Interactive clipping dialog to siren_dotnet.
Add command "activate" and global variable "$ACTIVE".