Information Design for PDAs
http://www.stcwestcoast.ca/index.php/site/coastlines_article/401/

Padmanabhan, Poornima
STC Canada West Coast
2007

Abstract:

Designing online Help for PDAs is a marked shift from designing for personal computers because the reduced memory capacity and display-unit size (a VGA screen of 300x240 pixels) of PDAs mandate Help formats optimized in ways not necessary with larger machines. Current Help files on PDAs are simple HTML files, but this format might prove inadequate for the complex Help files needed for more elaborate software applications. Thus it is necessary to explore strategies for online Help that work within the limitations of small-screen devices.