Prior to 'syncing' with Outlook.com, I used Outlook 2010/2013 exclusively for my calendar.  At that time I would create an appointment, scan in the invitation, and 'snip it' as a picture in the body of my appointment.  This way I only had to glance at the details and not open up an attachment.

 

However, now that my Outlook 2013 calendar is 'syncing' with my Outlook.com calendar, I can no longer 'insert' ANYTHING into the body of the appointment.  Am I missing something or is this just not an option when using the Outlook.com calendar?