You specify one or more algorithms for each attribute specified in the AttrConstraint tag. Using the com.ptc.core.rule.server.impl.GatherAttributeConstraints algorithm, you set up the structure to gather the constraints. You can specify zero, one, or more of the constraint algorithms to set the display characteristics that you want.

For more information on how the constraint algorithms work together and for the specific syntax to use in the AttrConstraint tag, see AttrConstraint (Tag-Syntax).

Out of the box, Windchill provides the following constraint algorithms. The names are shortened in the list below; enter the tag, including the full name of the algorithm, on one line.