OpenSite Designer Help

Specifying Which Elements Are in the Fence Contents

The Fence (Selection) Mode determines just what constitutes the contents of a fence — that is, whether the elements (or parts of elements) inside, outside, or overlapping the fence are "contained" by the fence to be processed.

  • Inside — Only those elements completely inside the fence are processed.
  • Overlap — Only those elements inside or overlapping the fence are processed.
  • Clip — Only elements completely inside the fence and parts of elements inside and overlapping the fence are processed.
  • Void — Only those elements completely outside the fence are processed.
  • Void-Overlap — Only those elements outside or overlapping the fence are processed.
  • Void-Clip — Only elements completely outside the fence and parts of elements outside and overlapping the fence are processed.


    Fence selection modes. At left, a fence block and elements. At right, the fence contents in each Fence Selection Mode.

The Fence Selection Mode is a tool setting (labeled Fence Mode) for the fence tools in Drawing > Home > Selection > Fence Tools as well as for manipulation tools that can operate on fence contents. In the latter case, it is set with the option menu next to the Use Fence control. There is also a control in the Locks dialog.

Options Description
Output File

Displays the name of the file to which the fence contents will be copied/moved. By default, the file is given a name in the format filename_model. You can select a different file name by clicking the Define Output File icon.

Define Output file (icon) Opens the Save Fence Contents As dialog, which lets you select a destination folder and file name to which the contents will be copied/moved.

If an existing file is chosen, its current contents will be deleted. An Alert box will warn you of this before you accept the operation

Processing Mode Defines how the fence contents will be processed.
  • Copy - Fence contents will be copied to the new file. The original elements will remain in the active model.
  • Move - Fence contents will be deleted from the active model and moved to the new file.
Fence Mode Determines which elements are included in the fence contents. Allows you to set various Fence modes.
  • Inside
  • Overlap
  • Clip
  • Void
  • Void-Overlap
  • Void-Clip
Switch to generated file If on, after processing the fence, the current file is closed and the Output File is opened.
Note: It is not necessary to place or recall a fence in order to set the Fence Selection Mode. Conversely, once a fence is placed, you can adjust the Fence Selection Mode to change the fence contents without moving or replacing the fence.