scrolling by page (e.g. by page up) can be improved by making it reversible.

reversible means that you get to the end of the page, hit page up, and
the screen will look exactly like it did before you hit page up.  this
can be done by inserting blank lines or lines consisting of ~ (a la vi
or less), perhaps with another indicator, such as reverse video on the
last line.

scrolling should give you an indication of where you were before the
scroll.  making scrolling reversible does this by always having the
last line you read at the top of the screen.

cf. less(1) which lets you highlight the last line you read.

At Tue, 23 May 2006 16:50:42 -0700,
gambarimasu+reportbug@gmail.com wrote:

I think status line indicates where you're looking.

Regards,
Fumitoshi UKAI

please try the following command from the shell prompt.

        LESS='-Q -i -W -j5' less /etc/passwd

press space bar just enough times to get to the end of the document,
but no more.

notice how the last line is in reverse video.  that is what i am suggesting.

press space bar again.  notice how the reverse video goes away.

man less:

       -w or --hilite-unread
              Temporarily  highlights  the  first  "new"  line after a forward
              movement of a full page.  The first "new" line is the line imme-
              diately  following  the  line  previously  at  the bottom of the
              screen.  Also highlights the target line after a g or p command.
              The  highlight is removed at the next command which causes move-
              ment.  The entire line is highlighted, unless the -J  option  is
              in  effect, in which case only the status column is highlighted.

       -W or --HILITE-UNREAD
              Like -w, but temporarily highlights the first new line after any
              forward movement command larger than one line.