LONCAPA Help
 "Index/Name"  This is an internal label for the rule. Something must be entered here, and it must be different for each rule. This same value will be used to add a conditional hint.

"Commaspearated list of vectors"  List all of the vectors that should be added up to be tested.

"Length"  How long the sum of these vectors should be.

"Absolute error length"  How accurate the length must be to get the answer correct.

"Angle"  What direction should the sum of these vectors point. All values are measured in degrees, counterclockwise starting at the positive xaxis. Values must be 0 £ q < 360

"Absolute error angle"  How accurate the angle must be to get the answer correct.