You can use the consoleLib.closeWindow() system function to clear the specified window from the screen. The function releases the resources associated with the cleared window, and activates the previously active window.
After you call consoleLib.closeWindow(), the window cannot be reopened with consoleLib.openWindow() or consoleLib.openWindowByName().
You cannot close the SCREEN window.
consoleLib.closeWindow(window Window in)
The following example shows the consoleLib.closeWindow() function:
window1 WINDOW {
name="customerWindow",
position = [2,2],
size = [18,75],
color = red,
hasborder=yes};
...
consoleLib.closeWindow(window1);