If you use a VAXstation, @b(be sure
that the I-shaped @p(mouse cursor) is inside the window you are trying
to use).  If it isn't, the terminal will ignore
everything you type.  To move the @i(mouse cursor), roll the little @P(mouse) 
puck next to the terminal around until the I is in the window.)


@subsection(VAXstation Windows)

You may notice other people on the VAXstation terminals with very fancy,
complicated displays.  They are using many overlapping @b(windows)
in different sizes and colors.  To find out how to do this, take an
Athena Minicourse on the "X window system."  There will be an @i(Essential X)
later in the Spring Term 1986.