Using PDF, is it possible to create a single form element with
multiple fields of which several can be selected? For example, in HTML, one can create a set of checkboxes associated with the same field name:
<div>Select one for Member of the School Board</div>
<input type="checkbox" name="field(school)" value="vote1">
<span class="label">Libby T. Garvey</span><br/>
<input type="checkbox" name="field(school)" value="vote2">
<span class="label">Emma N. Violand-Sanchez</span><br/>
In this case, the field name is "field(school)", and when the form is submitted, "field(school)" can be supplied 0, 1, or 2 times.
Is there an equivalent construct in PDF where a single field can have
multiple values. So far in my investigation, it appears that if fields are assigned the same name, it is only possible to select one field. If it is possible to implement this in PDF, what is this construct called and how can it be implemented?
Edit: To clarify, I am aware that a PDF can contain
multiple form fields with different field names, and those can be selected independently, but then the grouping is implicit and not explicit as with the HTML form. I would like to use a construct that makes the grouping of options explicit, and preferably allows for restrictions (e.g. at least one required, no more than 2 allowed, etc).
