Dynamic Tab name in Site

Certified Lead Developer

I have a Site say "ABC". In that site, i have configured a record which has multiple tabs: summary, cases, audit etc. 

My Requirement is, whenever i click on a tab, the name at the browser tab should show that. For eg, If i click on Summary, the browser tab should show summary. I have attached a screenshot for reference.

I checked, it could be achieved by configuring dynamic display name in the Sites, but I don't know how to achieve that. Is there any code snippet or example for display name using expresssions in SITE.

Thanks in advance

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