variable line-display pager?

[Warren Block]

On Sat, 19 Feb 2011, Gary Kline wrote:

> Zank you, Sir Chip.. Anybody else?   I'm loathe to use anything gui,
> but here's  where I'll be happy w ith something GUI THat i can
> squeeze my "15" or small-n lines' worth into.

xterm -geometry 80x18 -e 'less -N /var/log/Xorg.0.log'

Why 18 to get 15 lines?  One line for the less prompt, maybe two for the 
title bar on my system.