-- Status: rewritten July 2018
-- Author: Lily Silverstein

doc///
 Key
  first
 Headline
  first element of a list
 Usage
  first L
 Inputs
  L:List
   or @TO Sequence@
 Outputs
  f:Thing
   the first element of {\tt L}
 Description
  Example
   first {a,b,c,d,e}
   first gens(QQ[x,y,z])
 SeeAlso
  last
  take
  select
  position
  "lists and sequences"
///