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|              WLAST              |
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WLAST([<window name>])

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Returns the name of the window which was active prior to the current
window, or true if named window was active prior to the current window.
Return value - Character or Logical
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WLAST() function returns a logical true if the specified window was
active prior to the current window.  If the specified window is was not
active prior to the current window, a logical false is returned.

You can also determine the window that was active prior to the current
window with WLAST().

<window name>
        To determine if a specific window was active prior to the current
window, include the window's name in WLAST().

        If a <window name> is not included in WLAST(), the name of the window
which was active prior to the current window is returned.  If the window
you specify in WLAST() does not exist, false is returned.

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See Also:  ACTIVATE WINDOW, DEFINE WINDOW, WEXIST(), WONTOP(),
WOUTPUT(), WVISIBLE()

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