2.3.1 General Format

All arguments to any constraint function follow the same general format.

Format for all constraint functions.

Further, all constraint function names end with a single digit, except the general constraint function Constraint. This digit signifies the number of degrees of freedom constrained by the constraint. For example, the 2 in the Translate2 constraint function name signifies that it contains two constraint equations and constrains two degrees of freedom in a model.