AW: [mapserver-users] Errors in trying to angle my labels.

[Eichner, Andreas - SID-NLKM]

Not sure, but try again without the square brackets. I believe MapServer
treats there content as column name. Since you used LABELANGLEITEM
successfully the generalized ANGLE should also work...
So try

ANGLE
"(180/3.141592654*atan2((y(endpoint(the_geom))-y(startpoint(the_geom))),
(x(endpoint(the_geom))-x(startpoint(the_geom)))))"