# Nonqualified (NQ) Space Names

The individual name given to a nonroot coordinate space is its nonqualified name. Nonqualified names must conform to the following syntactic rules:

1. The name must contain at least one character.
2. The name must not contain any nonprinting characters.
3. The name must not contain any slashes of either type (/ or \).
4. The name must not contain any whitespace except for the space character.
5. The name must not be “.”, “..”, “…”, “^”, or “$”.
6. The name must not begin or end with a space character.
7. The name must not begin with a punctuation character (as defined by the ISO iswpunct() function).