DescriptionFolding mode is a MinorMode that uses a special string to find the regions to hide: {{{ and }}}. The variable fold-mode-marks-alist defines the strings for each MajorMode separately. From the folding menu you can enter, show, hide, etc. regions. With the Mouse-3 (the rightmost mouse button) when there is no other context menu defined a right mouse click will toggle the visibility of fol