---
title: Language limitations
description: This page shows the history of all release notes.
group: Language
order: 2
---

The language support by _LispPad_ is incompatible or incomplete with respect to the following R7RS features:

- Lists are immutable. Mutable cons-cells are supported in a way similar to
[Racket](https://racket-lang.org)
- Literals in `syntax-rules` are not matched based on their definition but their symbol identity
- Datum comments introduced via `#;` do not always work as expected
