Android - Selecting a range of photos in gallery

I found I could multi select pics by touching the first one, holding my finger on the screen, and then dragging across the screen to the last one. They all turn to selected as I pass over them. A bit like selecting text with a mouse on a PC!

Works also in Total Commander, an otherwise very clever and powerful two pan file manager: long-tab the icon of the first file, in the menu choose SELECT or DESELECT, glide till the other end of the range, tap the last desired icon, and voila!