To fold a chain of filtered calls
  1. Select a desired call chain that contains filtered calls.
  2. Click callchain_unfolded to fold the calls.
To unfold a chain of filtered calls
  1. Select a desired call chain that contains filtered calls.
  2. Click callchain_folded to unfold the calls.
To fold chains of filtered calls by default
  1. On the menu bar, choose View | Options. The Options dialog box opens.
  2. Select the Folding node in the left tab.
  3. Select the Fold filtered system calls on tree expansion check box in the right pane.
  4. Click Save to apply changes.