So far, we have:
1. acs_Focus, which is used to set focus on form elements in a safe way, without annoying browser errors if the element is not available.
2. acs_FormRefresh, which can be used with ad_form to make a form refresh when you change a value in a radio widget, say.
3. acs_CopyText, which can be used to copy text to the clipboard (works on IE, and on Mozilla, if you know how to configure your browser, which is very tricky). This also requires a special hidden textarea in the page to work, which is included in blank-master.adp.
The core.js file is automatically loaded by blank-master.