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Mixing the three types of user-defined characters is not permitted.
If, for example, you select draft and define some characters, then
select proportional and define some more, the first character defini-
tions will be destroyed. Only one type of character definition may be
stored in RAM at any time.
If you define characters in one mode, then switch to another mode
and select the user-defined character set, the command will be ignored
and nothing will print. The user-defined character definitions, how-
ever, remain unaffected. If you switch back to the mode in which they
were defined, you can then select and print them.
Keep in mind that user-defined characters are stored in RAM,
which is not permanent. Whenever the printer power is turned off, or
the printer is initialized with the ESCape “@" command, all of the
user-defined characters are lost. Also, your computer sometimes
sends an initialization (INIT) signal, which wipes out all user-defined
characters. (Some computers do this each time BASIC is loaded.)
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