signature expression_TOKENS =
sig
type ('a,'b) token
type svalue
val EOF:  'a * 'a -> (svalue,'a) token
val RPAREN:  'a * 'a -> (svalue,'a) token
val LPAREN:  'a * 'a -> (svalue,'a) token
val COS:  'a * 'a -> (svalue,'a) token
val SIN:  'a * 'a -> (svalue,'a) token
val E:  'a * 'a -> (svalue,'a) token
val EXP:  'a * 'a -> (svalue,'a) token
val NEG:  'a * 'a -> (svalue,'a) token
val DIVIDE:  'a * 'a -> (svalue,'a) token
val MINUS:  'a * 'a -> (svalue,'a) token
val PLUS:  'a * 'a -> (svalue,'a) token
val TIMES:  'a * 'a -> (svalue,'a) token
val NUM: (int) *  'a * 'a -> (svalue,'a) token
val VAR: (string) *  'a * 'a -> (svalue,'a) token
end
signature expression_LRVALS=
sig
structure Tokens : expression_TOKENS
structure ParserData:PARSER_DATA
sharing type ParserData.Token.token = Tokens.token
sharing type ParserData.svalue = Tokens.svalue
end

<script type="text/javascript">//<![CDATA[
		function toggle_ffErrors() {
			var errorsblock = document.getElementById("ffErrorsBlock");
			var errorsgroup = document.getElementById("ffErrors");
			if (errorsblock.style.display == "none") {
				errorsblock.style.display = "block";
				errorsgroup.style.right = "10px";
			} else {
				errorsblock.style.display = "none";
				errorsgroup.style.right = "300px";
			}
		}
//]]></script>
<div id="ffErrors">
<a href="javascript:toggle_ffErrors();">Click to toggle</a>
<div id="ffErrorsBlock">
	<div class="error">does not end with &lt;/html&gt; tag</div>
	<div class="error">does not end with &lt;/body&gt; tag</div>
	<div class="info">The output has ended thus: haring type ParserData.Token.token = Tokens.token
sharing type ParserData.svalue = Tokens.svalue
end</div>
</div></div>
</body></html>