-This program writes a file KEEPER.ps which will contain private keys from the
-keeper set KEEPER, specifically the keys with the given INDICES. Elements of
-the list are either simple integers or ranges [LOW]-[HIGH]; if LOW is
-omitted, it means 0, and if HIGH is omitted, it means the highest possible
-index. If no INDICES are given then all secret keys are written.
+This program writes a PostScript file to standard output which will contain
+key nubs from the keeper set KEEPER, specifically the keys with the given
+INDICES. Elements of the list are either simple integers or ranges
+[LOW]-[HIGH]; if LOW is omitted, it means 0, and if HIGH is omitted, it means
+the highest possible index. If no INDICES are given then all secret keys are
+written.