Low Line Symbol
The underscore (low line) _ is a punctuation character used in identifiers, labels, and simple formatting.
U+005F
The underscore, also called the low line, is a basic punctuation character: _. It appears in plain text and in many programming-related naming styles. Below you’ll find practical uses, copy options, and code-point details.
Low Line Symbol Meaning
The underscore “_” (Unicode: U+005F) is a punctuation character commonly used to separate words in plain text. In programming and filenames, it often appears in variable and identifier names where spaces are not allowed, or where a consistent delimiter is preferred (e.g., snake_case). In writing and UI text, it can act like a visual separator, a placeholder in forms, or a stand-in for a blank space. Because it’s a single ASCII character, it’s widely supported and easy to copy between documents, websites, and code.
Common uses
- •Separating words in identifiers and snake_case variable names
- •Using in usernames, handles, and tags where spaces are not allowed
- •Building filenames and URLs that avoid spaces
- •Creating simple labels, form placeholders, or visual separators in text
- •Formatting text strings in markdown-like or plain-text templates
Examples
_ Low Line (U+005F)
- _user_name
- _order_status
- _product_id
- _enter_your_email
- _team_lead_name
Variations
Ready to copy
Technical codes
| Unicode | U+005F | |
| HTML Entity | _ | |
| HTML Code | _ | |
| CSS | \005F | |
| Alt Code | Alt + 95 | |
| Decimal | 95 |
How to type Low Line Symbol (_)
On Windows
Hold Alt and type 95 on the numeric keypad. In Word, type 005F then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 005F. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 005f, then press Enter or Space.
Anywhere
Copy _ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What is the Unicode code point for the underscore?
The underscore (low line) is Unicode U+005F.
How do I type or copy the underscore on my keyboard?
On most keyboards, the underscore is Shift + the key next to the zero (0). You can also copy it directly from this page.
What does the underscore mean in programming names?
In many code styles, underscores separate words in identifiers (commonly seen in snake_case).
How can I represent underscore in HTML and CSS/JavaScript?
HTML entity: _. CSS escape: \\005F. JavaScript escape: \\u{005F}.