Arbortext IsoDraw > User's Reference > Menus > Element Menu > Hide
  
Hide
The Hide command allows you to blend out elements which have been locked before (see Lock). The elements naturally remain part of the drawing.
If Hide is selected, this is indicated by a check mark in front of the menu command. By selecting the command again you can make the hidden objects reappear on the screen and the mark disappears in the menu.
One advantage of this function is that hidden elements do not need to be included in the screen redraw. This saves time where complex drawings are involved.
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If you have organized your drawing into layers, you can easily hide all the elements on a given layer in a single operation by using the setting options offered by the layer window.
Hide only conceals those elements which have been locked with the Lock command. Elements on locked layers are not affected.
The Hide option is disregarded when saving a file. When you re-open a file, all the elements are displayed on the screen regardless of the settings in the last working session.