I would like to copy the LaTeX source of an equation to the clipboard without having to open the source pane. If this is not possible without modification to the source code of LyX, at least I would like to know how to call an arbitrary external script "myscript" with math-extern. I already tried adding the path of "myscript" to the PATH prefix of LyX and also tried putting it in ~/.lyx/scripts. I also used lyx -dbg gui and it complained that there is no converter called "myscript".
Thank you!
