# Module `Manip.Class`

```ocaml
val contain : 'a elt -> string -> bool
```
```ocaml
val remove : 'a elt -> string -> unit
```
```ocaml
val removes : 'a elt -> string list -> unit
```
```ocaml
val add : 'a elt -> string -> unit
```
```ocaml
val adds : 'a elt -> string list -> unit
```
```ocaml
val replace : 'a elt -> string -> string -> unit
```
```ocaml
val clear : 'a elt -> unit
```
```ocaml
val toggle : 'a elt -> string -> unit
```
```ocaml
val toggle2 : 'a elt -> string -> string -> unit
```