The last two commands in the Spatial menu are used to discard changes made in the current session or to delete extracted or added features.

Discard Changes

WARNING: The 'Discard Changes' function should NOT be used with OpenComms because this function does not handle non-graphical records. Instead of using the 'Discard Changes' functionality, the user should exit without posting and then create a new dgn or version and continue with the design.

Erase Features

1. From the Spatial Tools toolbar, click the 'Erase Cached Instance's icon.

   

2. The Erase Features dialog box opens.

   

3. Select All to erase every feature queried in the active work session, View to erase only the actual view, or Fence to erase features inside a fence. The Erase Features function does not erase anything from the database - it simply erases the 'cached instance' of the graphic(s) that were extracted, from the current session.
4. Left click on the map to confirm or right click to cancel the erase.