Left Square Bracket Lower Corner ⎣

⎣ (U+23A3) is a standard Unicode character that you can copy and paste anywhere text is accepted. This page provides a concise reference with safe tips, internal links, and practical guidance so you can use it reliably across apps and platforms.

What it is and where it’s used: Left Square Bracket Lower Corner is part of the Symbols family (block: Miscellaneous Technical). If you need styled or decorative alternatives, try our Fancy Text tool to generate compatible text that works in most modern interfaces.

History & usage: The character is LEFT SQUARE BRACKET LOWER CORNER with code point U+23A3 in the Miscellaneous Technical block. In plain text, it appears as a small corner mark used at the left lower edge of a square bracket. Its history is tied to technical writing and typesetting, where symbols extend the range of brackets and delimiters. The official name and code point help users identify it in character inventories and fonts. In practical use, the symbol marks the end or corner of a larger bracket shape in diagrams or notation. It is not common in everyday writing, but it can appear in specialized documents, software interfaces, or typesetting schemes that require precise corner indicators. The usability goal for this glyph is to show a concrete boundary alongside other bracket forms. In programming and math, brackets and quotes often delimit groups, parameters, or quoted text. This Lower Corner variant reinforces that function by providing a recognizable visual cue within mixed content. As with related symbols, it supports clear, structured presentation in technical communication.

Copy and input: the quickest method is to copy the character here. You can also insert it by its codepoint U+23A3 in many development tools or editors. Some operating systems provide a character viewer or input palette that lets you search by name or code and insert the glyph into documents.

Display and fallback: if you see an empty box (tofu) or a placeholder rectangle, the active font might not include this codepoint. Switching to a font with broader Unicode coverage or using a fallback font usually fixes the issue. On the web, ensure the page’s font stack includes a general‑purpose fallback.

Related references: browse the Categories for similar characters. When choosing a symbol, prefer the official codepoint for semantic clarity and better compatibility with search, copy, and accessibility tooling.

See our category page for related symbols.