The SEQ rule, which must be placed inside a
        RULES tag, highlights fixed sequences of text. The
        text to highlight is specified between opening and closing
        SEQ tags. The following attributes are
        supported:
TYPE - the token type to highlight the
                sequence with. See the section called “Token Types” for a
                list of token types.
AT_LINE_START - If set to
                TRUE, the sequence will only be highlighted
                if it occurs at the beginning of a line.
AT_WHITESPACE_END - If set to
                TRUE, the sequence will only be highlighted
                if it is the first non-whitespace text in the line.
AT_WORD_START - If set to
                TRUE, the sequence will only be highlighted
                if it occurs at the beginning of a word.
DELEGATE - if this attribute is
                specified, all text after the sequence will be highlighted using
                this ruleset. To delegate to a ruleset defined in the current
                mode, just specify its name. To delegate to a ruleset defined in
                another mode, specify a name of the form
                mode::ruleset
The following rules highlight a few Java operators:
<SEQ TYPE="OPERATOR">+</SEQ> <SEQ TYPE="OPERATOR">-</SEQ> <SEQ TYPE="OPERATOR">*</SEQ> <SEQ TYPE="OPERATOR">/</SEQ>