@Peter200lx suggested (in issue #47):

Possible suggestion, have the ability to modify only certain lines of text.

For example:

*************
Location Name
Owner Name
*************

Could be changed to

/-----------\
Location Name
Owner Name
\-----------/

Simply by calling -c to clear the text buffer, -1 "/-----------\", -4 "\-----------/" and then clicking with the Arrow. Any line that is not purposefully set would be read from the sign that already exists, and then be written back to it when replacing all of the lines. If you wanted to wipe a line, make it blank, then you'd have to explicitly call -# "" to tell the brush to make that line blank.

My thoughts about the parameter syntax:

-#:disable or -#:enable to disable or enable certain lines. Using -# without :enable/:disable will leave the state as it is.