X11 not visible from GUI Finder Interface on MacOS 10.3

The X11 program is not visible from the GUI Finder interface on MacOS 10.3

On the DVD version is on Disk 1 but in a directory "hidden" from the Finder's GUI interface.

After mounting the disk look in:

  /Volumes/whatever-the-disk-is-called/System/Installation/Packages/

and there should be a file/package called X11User.pkg

After cd'ing to the relevant Volume you can simply say:

  open ./System/Installation/Packages/X11User.pkg

to launch the GUI installer.

Alternatively run

  installer ./System/Installation/Packages/X11User.pk

to use the command-line version (which is simpler and faster to use in scripts etc).