Part Modeling > Part Modeling > Feature Relations > About Feature Relations
About Feature Relations
When creating or editing features, you can type an expression in place of a dimension value. This adds a relation that controls the dimension.
You can type an expression in place of a dimension in the following cases:
When modifying dimensions in the graphics window, double-click the dimension value and type an equation in the dimension box.
When creating or editing a feature, type an expression in the dimension box located on the tab. For example, when creating an extrusion, you can type an expression in the depth dimension box.
When editing dimensions using a dialog box, type an expression in the dimension box.