N++ do text block, for example procedures, you just click '-' and all text in block turns to one line. How can I do this with custom blocks of text?
OK, and what about the '+' symbol near the hided lines? Is there no ways to do so??
Mark your lines, including an extra line at the top, Plugins | TextFX Viz | Hide between selected...
TextFX Viz and Folding use the same internal toolset so they are not very cooperative.