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The following is an extract of a letter sent to a user who purchased several DEC VT240 terminals. Frankly, the VT240's are terrible terminals in my view, and I really think you should consider exchanging them for something better. Here are some of the reasons: The keyboard layout is full of misfeatures, particularly for folks using a DEC-20 or EMACS on the -20 or VAX, especially the placement of the angle brackets, the shift lock, and the escape key. The terminal loses data at high receive rates, so for plots, it will be necessary to use XON/XOFF. If this could be host-selected, it could be hidden in a PCL procedure like TK; unfortunately, it must be done from SETUP mode. EMACS cannot be used with this setting, not only because the terminal sends CTL-S to stop input, but also because it then disables the keyboard from sending either CTL-S or CTL-Q. Although the color version of the VT240 supports Tektronix-style plot commands (with appropriate mode switches from the host, which TK /VT240 handles), it will not do color; any attempt to switch to Regis mode and change color while in Tektronix mode trashes the screen. The alpha and graphics screens are not separate, so any alpha output after a plot is made overwrites the plot, or causes it to scroll of the screen. Even the dumb ADM3a+ does better than this! As I have written it, the PLOT79 interface will finish each plot by cursor positioning to the last line on the screen, so any prompt that comes out does only minor damage. The TK /PAUSE option is the safest way to see a plot intact. Function keys can be loaded only from the host, not from the keyboard; a reasonable terminal should support loading from either source. The resolution is poor -- 800 horizontal x 240 vertical, and one can get much better resolution for the same amount of money from several other vendors. The several hundred-page manual is atrocious and lacks an index. I recommend the exercise of trying to figure out from it how to draw a vector in some particular color, and do this in less than an hour of frustrated paging back and forth in the manual. I could go on, but I have other things to get done. I would suggest you look seriously at the Visual 500, Selanar HiRez, or the new Digital Engineering terminals for monochrome, or the Tektronix 4105 or Intecolor VHR19 for color.