Continuing the discussion from How to restrict account changes when authenticating with Google?:
I’ve tried Header and Top in turn to embed:
<!DOCTYPE html> <script> document.getElementById('input#new-account-name').setAttribute('disabled'); </script>
but I cannot see it being added to the page. I’ve included the DOCTYPE part because the customization page puts up a warning indicator otherwise. However, the HEADER code in Sam’s personal “minimal” topic list design doesn’t have that. Instead, it has:
<script type='text/x-handlebars' data-template-name='list/topic-list-item.raw'>
Where can I find out how the customisations page works and what is possible with it?