Accidentally making windows vanish in my old-fashioned Unix X environment

One of the somewhat odd things about my old fashioned X Window System environment is that when I ‘iconify’ or ‘minimize’ a window, it (mostly) winds up as an actual icon on my root window (what in some environments would be called the desktop), in contrast to the alternate approach where the minimized window is represented in some sort of taskbar. I have strong opinions about where some of these icons should go, and some tools to automatically arrange this for various windows, including the GNU Emacs windows I (now) use for reading email.