Convert multiple files to postscriptStep 1 : Click "Clear page" to clear the editor if needed. Step 2 : Click "Select files ..." button to open a open-file dialog. Step 3 : Double click on a file or multi-select multiple files to display a file listing on the editor page. Step 4 : Click "Files to postscript" button to save the file listing files with the '.ps' extension. . File mode : Make sure "File list" mode is checked.