From: Satoshi Fujiwara <fujitets@w2.dion.ne.jp>
> Let me ask another question.
> # Maybe it's a FAQ...
> 
> Why camltk and labltk both exists?
> These look like twins for me.
> What is the role of these two libraries?
> (I think if there is no need to use the camltk...)

The original library was CamlTk, and LablTk was actually created by
hacking the automatic generation tool included in CamlTk.

As a result, for a long time only CamlTk was available, and for
instance the MMM web browser was developped using CamlTk. Many
examples are available, and CamlTk is described in one of the rare
books on OCaml written in English.

For all these reasons, it is necessary to continue supporting it, and
the current implementation does it at a very low cost, by using the
same backend.

Jacques Garrigue