number sign, hash mark, pound sign
In UNIX and HTML programming, the number sign (#) is called a hash mark.
- The hash mark (#) is very useful in creating web pages.
Telephone companies often call the number sign a pound sign, although this usage can lead to confusion, since the term pound sign is also used for the British pound symbol (£).
- On North American telephones, the pound sign (#) is found in the lower right-hand corner of the keypad.
- Please call this mark (#) a number sign!
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