- installed. Xt/ and Xaw/ (Athena) are free and available on all
- systems; Xm/ (Motif) is available on all commercial systems except
- SunOS 4.x and some early releases of Solaris. For Linux and other
- free Unixes systems, a Motif clone is available from
+ installed. Xt/is free and available on all systems; Xm/ (Motif)
+ is available on all commercial systems except SunOS 4.x and some
+ early releases of Solaris. Linux and other free Unixes systems
+ usually come with Gtk, but a Motif clone is also available from