Problems with .XML instruction to the internet

Hi, I’m thumping my head beside a brick wall. I corrected .catx folders to begin edition I want, excluding that I can't picture out how to contain the Body / Details for scheduled time (the huge section you can type in at the bottom when you create an appointment). When I transfer the calendar into XML, it is enclosed by a tag, but utilizing that in the resource doesn't function. Can anybody explain what is happening? Or let me know that it's not possible? Why there is no XML instruction for this anywhere on the internet? Please recommend suggestion
