@Override public String toString() {
		switch(this.tt) {
		case TK.INDENT: return "end of line";
		case TK.CODE:
		case TK.AST_BRACE: return "{... }";
		case TK.AST_PARENTHESIS: return "(... )";
		case TK.AST_BRANCET: return "[... ]";
		default: return this.text;
		}
	}