There can be up to 32 <Extern Text> objects within a print job. For each object
you can define the number of wildcards and the offset separately.
But nevertheless all <Extern Text> objects within a print job will process the same
received character string. It is just a matter of the wildcard and the offset settings
which part of the received character string is used by the <Extern Text: Fixed
length> object.
The received serial data are stored in an input buffer. The size of this buffer is defined
the <Extern Text: fixed length> object that have the largest sum from wildcards
and offset.
If you like to use more than one <Extern Text: fixed length> object in a print job it
is mandatory that the transferred string is always of the same length.
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