+end
+document plist
+List dumper iterating by `->next':
+plist <head pointer> [<data field to display>] [/<format>]
+end
+define countlist
+ set var $countlist_iter=$arg0
+ set var $countlist_count=0
+ while ($countlist_iter)
+ set var $countlist_iter=$countlist_iter->next
+ set var $countlist_count=$countlist_count+1