& listeras
 
 >> Help: Listeras (Template Command)
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 Syntax: Listeras
 
 The 'Listeras' command will show all of our currently templated eras. These
 are in the format of a year number most of the time for the sake of
 familiarity.
 
 You can then use an era name with the 'Listrefs' command to view all refs in
 a particular era.
 
 See also: listrefs, viewref
 