const RICH_TEXT: &str = "\
Rich-text attributes hold the HTML the editor stores, with inline formats only, in exactly the shapes the editor produces (see rich_text_formats). No block-level tags, scripts, event attributes, style attributes or inline images. Inline math is [latex]x^2[/latex], rendered with KaTeX like moocfi/latex blocks; inside it only & is decoded. The editor's <math> format renders as browser MathML and looks different: use it only where the page already does. Write &, < and > as entities. Matching in find_replace sees this markup: <em>for</em> loops doesn't match \"for loops\". The validator normalises harmless differences and rejects anything that would change meaning.";