There are many ways to enhance the edit form in regular datagrid + form, or just in form-only mode. In version 7.0, there are two new functions at your disposal, add_form_group_header() and add_form_tooltip(). Each provides a simple way to include additional text to annotate the form.
In form only mode, the form will remain on the screen after each submit.
->add_form_group_header('employeeNumber', 'Employee Details')
->add_form_group_header('email', 'Other Info')
->add_form_tooltip('email', 'Got mail?');