xwininfo prints information about windows on an X server.
Various information is displayed depending on which options are selected.

All questions regarding this software should be directed at the
Xorg mailing list:

  https://lists.x.org/mailman/listinfo/xorg

The primary development code repository can be found at:

  https://gitlab.freedesktop.org/xorg/app/xwininfo

Please submit bug reports and requests to merge patches there.

For patch submission instructions, see:

  https://www.x.org/wiki/Development/Documentation/SubmittingPatches