Simple, structured markup.
Boxup is a markup language, designed for situations where Markdown doesn't provide enough structure but where something like XML would be too cumbersome.
At a first glance, it can look very similar to TOML:
[header]
config-one = Some value (no need for quotes!)
config-two = Some other value
...however it has many more features, including markdown-like syntax for paragraphs and nestable blocks, meaning it's useful as a more structured markup replacement:
[/ Comments look like this! /]
[article]
title = Hello world!
slug = hello_world
[section one class="foo"]
css = "
width: 100%;
background: blue;
"
[/ This block is indented, which means it's a child of the `section` node: /]
[header]
Hey World!
Boxup is a very simple markup language based
around square brackets and indentation.
It has *bold text*, _italic text_ and you
can <tag stuff>[example content="This is a tag!"] too.