Map ID naming constraints
You must follow the w3.org naming conventions when you assign map IDs.
The guidelines in this topic are a synopsis of the most salient points of XML NCName conventions.
Map IDs must begin with ONE of the following characters:
- A-Z (uppercase letters)
- a-z (lowercase letters)
- Underscore ( _ )
In the remainder of the map ID, any of the above characters are allowed, with the addition of the following:
- 0-9
- Period (.)
- Hyphen (-)
- Colon (:)