Apl Functional Symbol Quad Question ⍰

⍰ (U+2370) 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: Apl Functional Symbol Quad Question 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 APL FUNCTIONAL SYMBOL QUAD QUESTION has the code point U+2370 in the Miscellaneous Technical block and is part of the Common script. In history, symbols in the APL family were created for mathematical and array operations. The Quad Question marks a special status or unknown value. Its shape is a question mark with a square in its design, which sets it apart from ordinary punctuation. In typical use, question marks introduce a clarifying note, a help section, a FAQ entry, or an item that represents an unknown status. This symbol is listed for environments that want a distinct marker for help or unresolved information, rather than a standard question mark. It communicates that a question exists but is tied to a specific context or rule. For writers and editors, it helps mark areas that require attention or further input. In plain text, the symbol serves as a visual cue without changing sentence structure. Overall, the Quad Question supports clear signaling of help, uncertainty, or pending status in technical and documentation work.

Copy and input: the quickest method is to copy the character here. You can also insert it by its codepoint U+2370 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.