I would like a banner at the top (like on codegolf.ta) which introduces new people and states the scope of the forum. Below is my attempt at a summary (edited by @Adám):
> This forum is for [APL](https://aplwiki.com), mainly [Dyalog APL](https://aplwiki.com/wiki/Dyalog_APL), and APL-like languages (e.g. [J](https://aplwiki.com/wiki/J), [K](https://en.wikipedia.org/wiki/K_(programming_language)) and [Q](https://en.wikipedia.org/wiki/Q_(programming_language_from_Kx_Systems))). However, [array programming](https://en.wikipedia.org/wiki/Array_programming) in any language (e.g. [NumPy](https://en.wikipedia.org/wiki/NumPy), [Julia](https://en.wikipedia.org/wiki/Julia_(programming_language)), and [MatLab](https://en.wikipedia.org/wiki/MATLAB)) is on topic, especially if in comparison to APLs.