Blank Space Symbol ␠

The exact text form for blank space symbol is ␠: U+2420, SYMBOL FOR SPACE. It is a visible control-picture character used to show where a space occurs in examples or documentation. For blank space symbol, nearby wording should identify the intended role of ␠ whenever another reading is possible. Useful copy checks include Visible space marker: ␠, Show two spaces: word␠␠word, Encoding lesson: U+0020 is represented visibly by ␠, and Whitespace legend: ␠ = space. The Blank Space Symbol examples give ␠ a defined role—such as “Visible space marker: ␠”—instead of presenting the mark as decoration. The main working contexts are Whitespace documentation, Text-editor examples, Encoding lessons, and Proofreading displays. For the blank space symbol entry, add nearby wording when ␠ could be interpreted in more than one way. The canonical scope is limited as follows: This page covers the visible symbol ␠, not an actual blank space, a non-breaking space, or the keyboard spacebar key. QA should catch copying ␠ when an actual space is required, assuming it creates blank width, and confusing ␠ with the open-box symbol ␣. Use the notation with the following constraints. Explain that ␠ is a visible representation, not whitespace itself. Use U+0020 for an ordinary space in data. Keep non-breaking space and other whitespace types distinct. Do not insert ␠ into production text as a replacement for spacing. Test ␠ in the final application and pair blank space symbol with readable text when the glyph alone is ambiguous. The device instructions provide a second validation route. Windows: In Microsoft Word, type 2420 and press Alt+X. For the blank space symbol entry, macOS: Open Character Viewer with Control+Command+Space and search for the first character name, or copy ␠ from this page. Recheck the saved text against U+2420. Those references support the encoded identity U+2420 and the limited use described for blank space symbol.