Do you mean top/bottom margins?
For this case, yes.
Start looking
here.
Beware that those instructions were primarily designed for PW3 and older, with no tests/reports for PW4. You might experience some differences in those files you will edit.
Just make sure to have your SSH automatically starting on boot + make backups, so you can easily restore the files, if you by accident did wrong changes and catch e.g. a boot loop
You need these parameters:
reader.content.topMargin
reader.content.bottomMargin