problem description
title="A bunch of lines that cause errors" nodes=4 elements=3

nodes
1 x=a.0 y=0.1 z=3 force=undefined constraint=junk
2 x=3.1 y=-021 z=4 constraint=pine
3 x=5 constraint=idiot

beam elements
1 node=[3,6] material=wood
2 node=[1,2] load=heavy
4 node=[1,8] 

material properties
/* there are none */

distributed loads
heavy direction=thatway values=(0,7800) (100,9400)

constraints
pin Tx=c

end