Simplify the following text for a Grade 12 native English-speaking person.
Original: hCard is a microformat for publishing the contact details ( which might be no more than the name ) of people , companies , organizations , and places , in ( X ) HTML , Atom , RSS , or arbitrary XML .
Simplified: hCard , short for HTML vCard , is a format for publishing the contact information of people , companies , organizations , and places , in XHTML , Atom , RSS , or raw XML .