some special character-objects don't work. e.g. the object [&&] points to ./%26%26 (which is ok, i think), which redirects to ./Main_Page (which is not ok).
other special characters work, e.g. [%] (which becomes ./%25)
a possible workaround is here http://meta.wikimedia.org/wiki/Apache_config#Patches
while the patch mentioned there is for apache-1.3.26, it might well work with the current host of pdpedia (which appears to be apache-1.3.33)
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a possible workaround is here http://meta.wikimedia.org/wiki/Apache_config#Patches
while the patch mentioned there is for apache-1.3.26, it might well work with the current host of pdpedia (which appears to be apache-1.3.33)