How to add a "!LPUB" line the the source window

[mihao]

Hi,

In LDCad, is there an easy way to insert a "!LPUB ..." line at particular position in the source window? I am trying to add some "build modification" meta lines there, but couldn't find any built-in tool for that under "LDraw meta items", so thinking maybe there is a way to add a generic "!LPUB ..." line then I can update the value of the line.

Thanks