from the preamble:
this class give you a multi-column, sortable pluggable list morph.

look at the class comment for a little more info

i only used this class in my own programming project. if you find a bug
while using this class, plz lemme know and i'll set things right

you can get it at:
http://users2.ipa.net/~jmcvay/squeak/PCLMorph.19991121-1806.cs

for an example of what this looks like:
http://users2.ipa.net/~jmcvay/squeak/DaProcessMorph.19991121-1816.cs

have a good day, everyone
jason