# icu_casemapping [](https://crates.io/crates/icu_casemapping)
🚧 \[Experimental\] Case mapping for Unicode characters and strings.
This module is published as its own crate ([`icu_casemapping`](https://docs.rs/icu_casemapping/latest/icu_casemapping/))
and as part of the [`icu`](https://docs.rs/icu/latest/icu/) crate. See the latter for more details on the ICU4X project.
<div class="stab unstable">
🚧 This code is experimental; it may change at any time, in breaking or non-breaking ways,
including in SemVer minor releases. It can be enabled with the "experimental" feature
of the icu meta-crate. Use with caution.
<a href="https://github.com/unicode-org/icu4x/issues/2535">#2535</a>
</div>
[`ICU4X`]: ../icu/index.html
## More Information
For more information on development, authorship, contributing etc. please visit [`ICU4X home page`](https://github.com/unicode-org/icu4x).