-/* Description:
- * Each constraint uses a set of parameters. In the SolveSpace library
- * these parameters are named "valA", "ptA", "ptB", "entityA", "entityB".
- * The "ptA" and "ptB" parameters represents a point in the constraint.
- * The "entityA" and "entityB" represents any other object (and a point too).
- * And the "valA" represents a real value.
- *
- * The attributes below are named independent of the SolveSpace.
- * Some of them may be unused.
- *
- * Also the list of possible attributes is provided to simplify assignment.
- */
-/// The value parameter for the constraint
-const std::string CONSTRAINT_ATTR_VALUE("ConstraintValue");
-/// The 2D value parameter for the constraint
-const std::string CONSTRAINT_ATTR_FLYOUT_VALUE_PNT("ConstraintFlyoutValuePnt");
-/// The value parameter for the constraint
-const std::string CONSTRAINT_ATTR_FLYOUT_VALUE("ConstraintFlyoutValue");
-/// First entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_A("ConstraintEntityA");
-/// Second entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_B("ConstraintEntityB");
-/// Third entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_C("ConstraintEntityC");
-/// Fourth entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_D("ConstraintEntityD");
-/// List of constraint attributes