From: chan AT turing DOT scs DOT carleton DOT ca (Yuet-Ning Chan)
Subject: Re: page
To: powers AT inf DOT enst DOT fr (David Powers)
Date: Sat, 31 Jul 93 4:32:04 EDT
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu

> You've got two options.  
> 
> 1.  Keep an array of page offsets on the way through and use an
> absolute (or relative) seek to get back.

I think this is a better way to seek backward.  However, for implementing
page, which can scroll 1 line, I have to keep the offsets of every line,
which is very memory consuming but it is the fastest way.
 
> 2.  Go back by pages (of say 1024 or 4096) and scan backwards counting
> CR-LFs
> 

This is not possible because there is some lines longer than 80 characters
and do not have CR-LF.