Hello I can imagine realization using PSPad scripting. This can include file into other. If you assign shortcut Ctrl+S, you can do it simple.
But the better way is persist original file and generate output with included files. Again, you can do it using PSPad scripting for whole project with one click. But I don't understand, why you don't use standard PHP include and don't include files on the server side. -- <http://forum.pspad.com/read.php?2,61055,61060> PSPad freeware editor http://www.pspad.com
