# Module CamomileLibrary.Type.UCol

    module UCol: sig .. end

    type variable_option = [ `Blanked | `Non_ignorable | `Shift_Trimmed | `Shifted ]

How variables are handled

    type precision = [ `Primary | `Quaternary | `Secondary | `Tertiary ]

Strength of comparison. For European languages, each strength roughly means as `Primary : Ignore accents and case `Secondary : Ignore case but accents are counted in. `Tertiary : Accents and case are counted in. For the case of `Shifted, `Shift_Trimmed, there is the fourth strength. `Quaternary : Variables such as - (hyphen) are counted in.

    module type Type = CamomileLibrary.UCol.Type

    module Make: functor (Text : CamomileLibrary.Type.UnicodeString.Type) -> Type  with type text = Text.t and type index = Text.index