collapsing

verb

1. To break apart and fall down suddenly; to cave in.
2. To cease to function due to a sudden breakdown; to fail suddenly and completely.“Pyramid schemes tend to generate profits for a while and then collapse.”
3. To fold compactly.
4. To hide additional directory (folder) levels below the selected directory (folder) levels. When a folder contains no additional folders, a minus sign (-) appears next to the folder.