Bematech LR2000 Programming Manual page 37

The printer does not transmit ASB status or perform status detection during
processing of this command even when ASB is specified.
When this command is received during macro definition, the printer ends macro
definition, and begins performing this command.
Once an NV bit image is defined, it is not erased by performing ESC @, reset, and
power off.
This command performs only definition of an NV bit image and does not perform
printing. Printing of the NV bit image is performed by the FS p command.
[Reference] FS p
[Example] When xL = 64, xH = 0, yL = 96, yH = 0
LR2000 Programming Manual V1.2