Separate names with a comma.
not so quick but still dirty experiment
Added bi-articulated frame
Cleaned up references to absent nodes, to eliminate warnings in log file and axelerate loading process.
DONE: Added "round floor" between front and rear parts, strengthened up front side of trailer frame, and some other minor updates.
NEXT: Completing/Polishing up meshes.
- reworked jbeams, created separate node groups for front and rear parts of body
- added initial draft of coupling jbeam and mesh