Template Variables for tags
The template variables to be used for tags are named as the parameter &tags. These TVs can be a set of radio buttons or checkboxes, or a dropdown selection list. Single selection lists have been tested, multiple-selection lists should also work.
As of PubKit E1.0, you can have multiple tagging/categorizing TVs, listed as described in the Parameters page. List any of them that must be populated for the form to be valid in the &reqTags parameter.
The tags use the OptionsButtons class to generate the HTML for the chosen selection type as a placeholder (called in the sample files), that you can include in your form.
You can use OptionsButtons to generate selection tags apart from the tagging TV, or indeed outside of PubKit altogether.