XIconSize(3) on Linux
The text 955c2fd339da, as Debian 10 (Buster) shipped it.
allocate icon size structure and set or read a window's WM_ICON_SIZES property
The text 955c2fd339da, as Debian 10 (Buster) shipped it.
allocate icon size structure and set or read a window's WM_ICON_SIZES property