User guide

Command Codes
There is also a special command ESCAPE (decimal code 27, named ESC)
which is used by most printer emulations to open a command sequence. It is
followed by one or more additional characters, which are identifiers and
parameters, belonging to the printable characters or to those from the range of
control codes.
NOTE: If your printer receives commands which are not compatible with the
emulation in use, it will ignore them, print them as normal characters or even
block. Whatever happens, no serious harm will be done to your printer. To
clear the situation, just switch the printer off and on again.
Use of Control Codes
When you program, you will have to insert the desired control codes in the
program code. Some general points should be kept in mind when implementing
them:
- As Control Codes are generally not regarded as printable data, they do not
take up space in the final output. E.g.: the print out of a data string of 150
characters, of which 80 are control codes, will result in the printing of 70
characters and may well stay in one line.
- Do not insert spaces within a control sequence nor between the sequence
and the printable data! The command code descriptions contain spaces
only for the purpose of legibility.
- Some commands are valid only for one line (until next carriage return),
others, until they are disabled.
- File format in MS-DOS closes each line with a CR+LF pair. Unix and
similar systems use only an LF. The factory setting of the printer for "new
line" creation (LF=LF / CR=CR) will thus work correctly for MS-DOS, but
has to be LF=LF+CR / CR=CR in UNIX environment. Adjust the
parameter setting during Set-Up or using a command code, if necessary.
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