This procedure is used to list all of the HLU objects currently referenced
by NCL variables.
procedure list_hlus( )
This procedure lists every variable reference to an HLU object currently
in the NCL identifier list. If run at the command line, this procedure
invokes a pager for scrolling through the list. The pager is either
"more" or whatever the user's PAGER environment variable is set to.
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$Revision: 1.9 $ $Date: 1998/06/15 21:30:06 $