Library /sys$common/syshlp/dtm$dw_helplib.hlb mu, v_mu, v_clsm  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Choose the Close View menu item to close the active
  view window when more than one view window is open.
  This enables you to close the active window without
  leaving Digital Test Manager.

  You must choose this menu item from the active view
  window.

  The Close View menu item is inactive if only one window
  is open.