topic...

   Specifies one or more topics that indicate what information you
   want.  Information is located in a hierarchical manner, depending
   on the level of information required.

   If you specify an asterisk (*) in place of any topic, the  HELP
   command displays all information available at that level.

   If you specify an ellipsis (...) after any  topic, you obtain
   everything in the help file at that level.

   You can specify percent signs (%) and asterisks (*) in the topic
   as wild card characters.