While I didn't need to use this to make these screen shots, I found it interesting that DECWindows includes its own screen capture / printing utility.

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Click on the above images for larger versions.

The first of these larger pictures shows the Calculator, Clock, the Work In Progress window with the buttons visible (got cut off on the first screen shot), The session manager with one of its menus "torn" off in to a separate window, the window manager right-click desktop popup menu, and the NCSA Mosaic web browser.

The second of these shows a comparison of various calculators. The X calculator, the KDE calculator, the Gimp, and KEdit are running on the local Linux box while the window manager is and everything else are running on  the VAX mainframe. An interesting demonstration of the flexibility of the X windowing system.