The script is to render math symbols on web pages.
If you try it and it doesn't work, you can access the header for your site using our Themes feature (screenshot below)
Hope that helps, but feel free to reach out if you get stuck at any point!
I've tried adding the matjax script inclusion in theme wide and site wide script header and footer scripts, yet it is still not working.
Any other tips?
Where are you trying to use the MathML? Is it for content within the course itself?
If so, I know we were looking into some solutions for that. My recommendation would be to get in touch with our technical team directly to discuss this in more detail.
there is a small part of code in a section of screen, how can I sort this.
This is most likely a custom code that you have inserted in your Integrations page or on the Advanced Settings page under Site Footer Code, Order Tracking Code, Signup Tracking Code or Google Site Verification Meta Tag.
If you're not able to find it, send us a message here: http://help.thinkific.com/support/tickets/new and we can take a look for you.