Choose the editor you want to launch when Okular wants to open a source file. This is the case when the document has references to the various points (usually row and column number) of sources it was generated from. The DVI format supports natively the addition of the information about the sources the LaTeX document was generated from. A similar system exists for PDF documents, called pdfsync, which stores these extra information in an external file named after the PDF file itself (for example mydocument.pdfsync for mydocument.pdf).

This is the command and its parameters to invoke the selected editor with the source file of the actual document.