Example form:
<noinclude>This is a simple form.
{{#formlink:form=Simple|link text=Test|link type=button|new window}}
</noinclude><includeonly>
{{{info|page name=<unique number>}}}
{{{field|confirm|input type=text|input type=radiobutton|values=No,Yes|default=No|show on select=Yes=>Confirm|mandatory}}}
<div id=Confirm>
{{{field|review|input type=radiobutton|values=maybe,maybe not|mandatory|restricted=YouAreNOTinThisGroup}}}
</div>
</includeonly>When the user does not select "Yes" but tries to submit the form, the form re-appears without an indication of what is wrong.
When the user selects "Yes" and tries to save, they see the error There were errors with your form input; see below. and, below, "None" is selected and greyed out ( T231957: PageForms: Should allow user to submit a form if there are restricted mandantory fields without defaults that the user cannot fill) and, beneath that, cannot be blank is displayed in red text.