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<!--
The DTD for the gretl input file format.
Based on ideas from GGobi.
-->
<!ENTITY % Boolean " true | T | TRUE | false | F | FALSE ">
<!ELEMENT gretldata (description?, variables, observations)>
<!ATTLIST gretldata
name NMTOKEN #IMPLIED
frequency CDATA #IMPLIED
startobs CDATA #IMPLIED
endobs CDATA #IMPLIED
type CDATA #REQUIRED
>
<!ELEMENT description ( #PCDATA )>
<!ATTLIST description
source CDATA #IMPLIED
>
<!ELEMENT variables ( variable )*>
<!ATTLIST variables
count CDATA #REQUIRED
>
<!-- Allows the name to be the only entry -->
<!ELEMENT variable ( #PCDATA )>
<!ATTLIST variable
name NMTOKEN #IMPLIED
label CDATA #IMPLIED
role CDATA #IMPLIED
value CDATA #IMPLIED
>
<!ELEMENT observations ( obs )+>
<!ATTLIST observations
count CDATA #REQUIRED
missingValue CDATA #IMPLIED
labels CDATA #REQUIRED
>
<!ELEMENT obs ( #PCDATA )>
<!ATTLIST obs
label NMTOKEN #IMPLIED
id NMTOKEN #IMPLIED
>
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