Index of values

Set a boolean field to false

If you want an option to be able to affect other elements of the option structure, based on an argument, you can specify handler = conversion' (fun o s -> {o with ...})

Print a help message containing all options

Default values for option parameters

Parse an arbitrary list of strings as if it were command-line arguments

Parse Sys.argv

Set a boolean field to true

If you want an option to be able to affect other elements of the option structure, you can specify handler = set' (fun o -> {o with ...})

Store a value in a field

Print a usage message