<?xml version="1.0" encoding="ISO-8859-1"?>
<!ELEMENT paramlang (paramname, paramprompt?, (paramaltunit?), (conversion?), (paramchoice*))>
	<!ELEMENT paramname (#PCDATA)>
	<!ELEMENT paramprompt (#PCDATA)>
	<!ELEMENT paramaltunit (#PCDATA)>
	<!ELEMENT conversion ((factor?), (addend?))>
	<!ELEMENT factor (#PCDATA)>
	<!ELEMENT addend (#PCDATA)>
	<!ELEMENT paramchoice (#PCDATA)>
		<!ATTLIST paramchoice value CDATA "0">

<!--param_langDD: This DTD extends the structure of a parameter. This way, the language dependent description can be put into 
separate '*.lang' XML file.
'paramaltunit' specifies the alternate unit (maximum one) in which the output is written. 
'conversion' spcefies the conversioin factor from primary unit (in Defn file) to alternate unit
***At present, there is no way (in DTD specification) to ensure that a value for conversion has to be there if theres 
is a alternate unit.
'paramchoice' specifies the various choice the parameter can have, if its choice list type parameter. Each
choice has a value associated with it (through 'value' attribute).

-->