XIconSize(3) on Linux
The text efd2f5ac9fa6, as Debian 8 (Jessie) shipped it.
allocate icon size structure and set or read a window's WM_ICON_SIZES property
The text efd2f5ac9fa6, as Debian 8 (Jessie) shipped it.
allocate icon size structure and set or read a window's WM_ICON_SIZES property