The first is part of EBNF grammar, the special sequence, which is arbitrary text inside question marks, whose interpretation is beyond the scope of the EBNF standard.
The interpretation of the text inside a special sequence is beyond the scope of the EBNF standard. The first is part of EBNF grammar, the special sequence, which is arbitrary text enclosed with question marks.
The first is part of EBNF grammar, the special sequence, which is arbitrary text enclosed with question marks. The interpretation of the text inside a special sequence is beyond the scope of the EBNF standard.
The first is part of EBNF grammar, the special sequence, which is arbitrary text enclosed with question marks. The interpretation of the text inside a special sequence is beyond the scope of the EBNF standard.