To use this plugin you need to look at a sign, then type one of the commands:
/se setLine <Line> <Text>
/se clear
/se clearLine <Line>
/se append <Line> <TextToAdd>
/se copy <Line>
/se paste <ToLine>
/se copyLines
/se pasteLines
/se shiftLine <Line> <Up | Down>
/se shiftLines <Up | Down>
In order to have access to these commands you must have the following permission:
signeditor.edit
If you have any more ideas on how to improve this plugin, please leave a comment below.