The Content Editor gives you the ability to exit the editing environment temporarily and test the part/feature you are editing.
As soon as you click the Test button on the ribbon, AutoCAD Mechanical toolset displays the test environment and inserts the part/feature at 0,0. If the part/feature has been set up for multiple sizes, AutoCAD Mechanical toolset displays the size selection dialog box before inserting it. If the part/feature is set up for drag-resize, it prompts you to drag to specify the size.
The test environment is a clean copy of model space. The Insert button on the ribbon, lets you insert multiple copies of the part/feature you are editing into the test environment. You can perform any operation that you would typically perform on a part/feature that you insert in a drawing. Typically you verify if
For example, does the Size Selection dialog box contain the correct parameters? Does drag resize work as expected?
We recommend that you test the part/feature you are editing at every stage. If you have changed the Family Table, we recommend that you save the changes before you start testing.
Once you finish testing, click the Close button on the ribbon to return to the Content Editor.