ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").
Id must match [A-Za-z][-A-Za-z0-9_:.]*
Must Start with A-Z or a-z characters May contains _(hyphen), :(colan) and .(dot)