protected void consumeOpenBlock() {
	// OpenBlock ::= $empty

	pushOnIntStack(this.scanner.startPosition);
	int stackLength = this.realBlockStack.length;
	if (++this.realBlockPtr >= stackLength) {
		System.arraycopy(
			this.realBlockStack, 0,
			this.realBlockStack = new int[stackLength + StackIncrement], 0,
			stackLength);
	}
	this.realBlockStack[this.realBlockPtr] = 0;
}