Convert it to ASCII G-code, make your changes, then flip it right back. Prusa are not the only ones to notice that the space inefficiency of the G-code file format is not ideal in all situations.

In C/C++, we can use the backslash escape sequence to create a string with any embedded ASCII code.",\\x09" is a string with a comma followed by an unprintable character whose ASCII code is 09.How ...