The work area (user interface) > Catch and catch modes > Catching and catch modes
  
Catching and catch modes
Catch is a tool that is used to specify what your cursor catches (or snaps) to. Creo Elements/Direct Modeling sets a default catch automatically, but sometimes you may need to change this catch mode (for example, to catch to a vertex on a workplane that is not the active workplane). If you are new to the catch mechanism we strongly recommend you try the example at the end of this section.
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You can use probe selection when you use the Catch tool to specify a 3D point that is hidden behind other elements.
Creo Elements/Direct Modeling displays the active catch settings in the catch window in the Status Bar (next to the units window).
Using catch
Catch is a tool that you use to specify positions for operations that use coordinates (for example, most 2D operations). Creo Elements/Direct Modeling sets a default catch mode (for either 2D or 3D) that works with most operations; you will need to set Catch manually when you want to control exactly what Creo Elements/Direct Modeling catches to. Here are some examples of when you would need to set the catch mode:
When creating a profile, to catch to a vertex on an inactive workplane.
When measuring, to catch to the center of a circular edge.
To catch exactly to points on parts.
To catch exactly to intersections, vertices, grid points, and so on, even if other elements lie on the point. For example, you can catch to a grid point even if there is an intersection or vertex within the catch range.
To display the catch option box,
Right-click a toolbar and check Catch on or double-click the catch window in the Status Bar.