SATO CT400 Operator And Technical Reference Manual page 108

Section 4. Programming Reference
Page 4-64
1. Specify the exact same parameters for the image to be replaced as
were specified in the original data stream, including rotation,
expansion, pitch, etc. This will ensure that the new data will
exactly replace the old image. If the replacement data contains
fewer characters than the old data, then the characters not
replaced will still be printed.
2. This command will not function if the power has been cycled off and
back on since the last label was printed.
3. Proportional Pitch text cannot be used with this command.
9001069A SATO CT Series Printers