2013

Table Of Contents
After plotting, you can use the Properties Inspector to convert annotational
constraints back to dynamic constraints.
Reference Parameters
A reference parameter is a driven dimensional constraint, either dynamic or
annotational. This means that it does not control the associated geometry,
but rather reports a measurement similar to a dimension object.
You use reference parameters as a convenient way to display measurements
that you would otherwise have to calculate. For example, the width in the
illustration is constrained by the diameter constraint, dia1, and the linear
constraint, d1. The reference parameter, d2, displays the total width but does
not constrain it. The textual information in reference parameters is always
displayed within parentheses.
You can set the Reference property in the Properties Inspector to convert a
dynamic or annotational constraint to a reference parameter.
NOTE You cannot change a reference parameter back to a dimensional constraint
if doing so would overconstrain the geometry.
Control the Display of Dimensional Constraints
You can display or hide dynamic and annotational constraints within a
drawing.
298 | Chapter 6 Create and Modify Objects