Given:
<!ELEMENT diagnostic-tracks (hookup*, (%step;)*, ((diagnostic-track-automated, diagnostic-track-manual) | diagnostic-track-automated | diagnostic-track-manual), evaluate*, disconnect*)>
and
<!ELEMENT diagnostic-track-automated (((%step;) | diagnostic_group)*, diagnostic_group, evaluate*)>
<!ENTITY % step "((%figtab;) | step1 | step1-alt)">
<!ENTITY % figtab "figure | figure-alt | table | table-alt | lubetab">
I am getting non-deterministic content model errors that diagnostic-track-automated and diagnostic_group could simultaneously match two or more tokens.
I changed to:
<!ELEMENT diagnostic-tracks (hookup*, (%step;)*, diagnostic-track-automated?, diagnostic-track-manual?, evaluate*, disconnect*)>
and
<!ELEMENT diagnostic-track-automated (((%step;) | diagnostic_group+)*, evaluate*)>
which eliminated the error messages, but I don't think my changes, especially for diagnostic-track-automated
, are correct.
I appreciate any suggestions for improvement.
I think what you came up with for diagnostic-tracks
appears to be what you were trying to accomplish with the original non-deterministic model:
zero or more
hookup
elements followed by
zero or more elements from%step;
followed by
zero or onediagnostic-track-automated
element followed by
zero or onediagnostic-track-manual
element followed by
zero or moredisconnect
elements
However I think the fix for diagnostic-track-automated
is not what you originally intended.
What you propose now is:
zero or more elements from
%step;
ordiagnostic_group
followed by
zero or moreevaluate
elements
What I think you meant was:
zero or more elements from
%step;
followed by
one or morediagnostic_group
elements followed by
zero or moreevaluate
elements
Which would be:
<!ELEMENT diagnostic-track-automated ((%step;)*, diagnostic_group+, evaluate*)>
Here's a full/testable example...
DTD (so.dtd)
<!ENTITY % figtab "figure | figure-alt | table | table-alt | lubetab">
<!ENTITY % step "%figtab; | step1 | step1-alt">
<!ELEMENT diagnostic-tracks (hookup*, (%step;)*, diagnostic-track-automated?, diagnostic-track-manual?, evaluate*, disconnect*)>
<!ELEMENT diagnostic-track-automated ((%step;)*, diagnostic_group+, evaluate*)>
<!ELEMENT table EMPTY>
<!ELEMENT table-alt EMPTY>
<!ELEMENT diagnostic_group EMPTY>
<!ELEMENT step1-alt EMPTY>
<!ELEMENT evaluate EMPTY>
<!ELEMENT figure EMPTY>
<!ELEMENT figure-alt EMPTY>
<!ELEMENT lubetab EMPTY>
<!ELEMENT step1 EMPTY>
<!ELEMENT diagnostic-track-manual EMPTY>
<!ELEMENT disconnect EMPTY>
<!ELEMENT hookup EMPTY>
XML
<!DOCTYPE diagnostic-tracks SYSTEM "so.dtd">
<diagnostic-tracks>
<diagnostic-track-automated>
<diagnostic_group/>
</diagnostic-track-automated>
<diagnostic-track-manual/>
</diagnostic-tracks>