Classic User Interface > Parametric Design with Creo Elements/Direct Drafting for Classic User Interface > Examples > Example 1: Introductory Design Example > Fully Constrain the Part > Manually Fix Reference Elements
Manually Fix Reference Elements
It is always a good idea to "anchor" a part by manually constraining one or more elements from moving. This helps to give the software a frame of reference for automatically assigning constraints later on. For this example, fix the lowest horizontal and leftmost vertical construction lines in place with Ref Elem constraints to anchor the part.
1. Bring up the PARAMETRIC DESIGN 2 screen menu by picking MENU 2 on any of the other Parametric Design menus.
2. Select ASSIGN and Ref Elem.
3. Pick on the lowest horizontal construction line (collinear with the bottom edge of the plate).
4. Pick on the leftmost vertical construction line (collinear with the left edge of the plate).
5. Press END.
6. Notice the reference-element icons. The leader lines of these icons are dotted so that you know they are assigned to construction geometry and not to the edges of the triangular plate. Each constraint type has its own unique icon. See Constraint Icons for a complete list of the constraint-type icons.
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