Programmer's Reference Manual Intermec Fingerprint® v8.70.0 ...

Chapter —Program Instructions
CLL
Purpose Statement for partial or complete clearing of the print image buffer.
Syntax CLL []
optionally specifies the field from which the print image buffer
should be cleared.
Remarks The print image buffer is used to store the printable image after processing
awaiting the printing to be executed. The buffer can be cleared, partially or
completely, by the use of a CLL statement:
- CLL partially clears the buffer from a specified field to the end
of the program. The field is specified by a FIELDNO function.
Partial clearing is useful in connection with print repetition. To avoid
superfluous reprocessing, one or several fields can be erased from the
buffer and be replaced by other information, while the remaining parts
of the label are retained in the buffer.
Note that there must be no changes in the layout between the PRINT-
FEED and the CLL statements, or else the layout will be lost. Also
note that partial clearing always starts from the end, which means that
the fields which are executed last are cleared first.
- CLL (without any field number) clears the buffer completely.
When certain error conditions have occurred, it is useful to be able
to clear the print image buffer without having to print a faulty label.
Should the error be attended to, without the image buffer being cleared,
there is a risk that the correct image will be printed on top of the
erroneous one on the same label. It is therefore advisable to include a
CLL statement in your error-handling subroutines, when you are working
with more complicated programs, in which all implications may
be difficult to grasp.
8 Intermec Fingerprint v8.70.0/v10.0.0 Programmer´s Reference Manual