limit on number of classes in layer?

[Zolla Michalak]

Is there a limit on the number of classes you can put in a layer? Seems
that we are running into this as we have a shape file of Africa with a
different class for each country. We got to the S's (countries with names
starting with S) and it bottomed out. Does mapserver store the classes in
an array or something? Mapserver is written in C, right?

Just wanted to make sure this is the problem and not something else. 

Thanks-

Zolla