Add title attributes for the UI elements that explain their function.
Please wrap them into the function cpn:i18n , for example instead of title="Close"
use title="${cpn:i18n(slingRequest,'Close')}" . Put those title attributes on their own line for code readability.
Apply such a wrapping to existing titles, if they are present.
Rewrite labels like <label for="predefinedPrompts">Predefined Prompts</label> to use the cpn:text tag:
<cpn:text tagName="label" i18n="true">Predefined Prompts</cpn:text>, but only if
the label does not have any subelements.
Wrap texts that are not internationalized with function cpn:i18n or the tag cpn:text in a cpn:text like this:
Cancel should become <cpn:text i18n="true">Cancel</cpn:text>.