This program doesn't (yet) create fonts for video monitors (the computer screens) or X Window terminals.
A terminal is a video display connected to a keyboard that is smart enough to send information between itself and a computer and to convert data sent to it into displays on the screen, but which lacks the computational capabilities of a computer. The terminal must contain memory to store the images (or a screenfull of characters) sent to it. They are commonly used in some businesses and libraries and as of 1996 about 40 million were estimated to exist worldwide. A person using a terminal is really using the central computer (perhaps located far away) to which the terminal is connected, although today that central computer may well be only a PC possibly connected to a network.
In contrast to a terminal, a monitor at a PC just displays the graphic image that is sent to it via the video card in the computer. A monitor by itself is much dumber than a terminal since it has no memory chips to store it's display. Instead, the display is stored in the memory of the video card (or adapter) inside the computer. When combined with this video car, the monitor is smarter than most terminals. A keyboard is connected to the computer although it sets in front of the display screen just like it was a terminal. To confuse matters further, sometimes a monitor is called a video display terminal
"Dumb" ANSI/ASCII terminals can only display letters and graphic characters (used for drawing boxes, etc) which are sent to the terminal as byte code (7 or 8 bit). They also usually handle ANSI escape sequences which can move the cursor around on the screen, erase specified parts of the display, etc. A few can do crude graphics by drawing lines. None can handle photograph quality graphics. Both the Wyse and VT220 fonts are for such terminals. However many smart graphic terminals can also emulate ANSI/ASCII terminals.
ANSI/ASCII terminals are connected to computers via low speed serial connections at speeds of roughly a thousand bytes/sec. This is more than fast enough for working with text and graphic character sets but is too slow for bit-mapped (or raster) graphics. Some "smart" terminals have high speed connections to computers using co-ax cable or twisted pair. These can also display full screen graphics such as the X window terminal or special terminals for Microsoft Windows.
Monitors, which are a part of most PC's, are much more common today then smart terminals. A monitor usually has 2 modes of operation (in the video card): text and graphics. The text mode is something like a dumb terminal and is used primarily in MS-DOS. In graphics mode, the monitor is sent a bitmap for the entire screen from the stored bit-map image in the memory of the video card inside the computer. This image is stored in the internal memory of the video card and written to the screen about 60 or 70 times per second (60 or 70 Hz, etc.).
Note that computer monitors are sometimes set up by computer software to emulate (behave like) terminals such as VT100 (no soft-font capabilities). Even when the emulation is for a terminal type that normally can accept soft-font, the emulated terminal often can't handle the specified terminal soft-font.
However PC's use their own system of fonts which are stored as "codepages" under MS DOS and are usable by MS Windows. PC Magazine provides its subscribers with a "fontedit" program to edit this font. There are various font editors such as Fontographer which may be purchased to edit fonts for PC's. Such fonts are often scalable and not fixed bit-maps.
Most modern printers and terminals permit you to design your own bit-mapped characters. You do this by encoding a bit map to represent the shape of each character and then you send this soft-font code (often with headers and trailers) to the device (terminal or printer). This soft-font code is thus "downloaded" from the computer to part of the memory of the device. If your device has this capability, you may be able to make use of this software.
To find out if you can do this, look at what may be called a "programmers manual/guide" for your printer or terminal. Sometimes some useful information is in a "users manual/guide", or even in a specification sheet. In recent years, much of the technical information needed to program characters is not included in the printer or terminal manual provided to the purchaser. Instead, it comes in an expensive "programmers manual" or the like. For HP printers (and ones that can emulate them) there is a 1991 book called: "HP Laser-jet Programming" which includes programming soft-font. There are a number of other books for HP.
Needs updating. ? => Uncertain LANGUAGES (VT220 or WYSE)
LANGUAGES: PCL6 (by HP), ESC/P2 (by Epson), IBM
Can't download soft-fonts: Epson: RX, MX, & FX series