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See HTML_Form_Entry_Module_HTML_Reference for complete documentation on the tags listed above, additional information on the <obs> tag and the related <obsGroup>, and details on more advanced features like macros, repeating templates, and enrolling patients in programs.
See the TrainingResources Space Archive page for more explanations and examples. Ellen Ball presented a class for HTMLForm Implementers. The other training courses include sections on forms as well.
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