Module type ArgOptions.FeatureRequests
val has_flag : 
  ?argsource:(string array * int) ->
  ?prefix:string ->
  string ->
  boolval get_option : 
  ?argsource:(string array * int) ->
  ?optprefix:string ->
  ?optsep:string ->
  'x named_option ->
  'xval get_option_d : 
  ?argsource:(string array * int) ->
  ?optprefix:string ->
  ?optsep:string ->
  'x named_option ->
  'x ->
  'xval get_option_d' : 
  ?argsource:(string array * int) ->
  ?optprefix:string ->
  ?optsep:string ->
  'x named_option ->
  (unit -> 'x) ->
  'xval get_args : 
  ?argsource:(string array * int) ->
  ?optsep:string ->
  unit ->
  string list