The Miscellaneous (Misc) tab allows you to add a title, description, header, and footer to the report. It also allows justification to be used on each of these items. This is also where the sharing and Scheduling controls are located as well as tools to create a drill-down.
There are two types of headers - Report and Page. The Report header shows up once, at the beginning of the report. This header is visible in the report viewer.
The Page header shows up at the top of every printed page. This header is not visible in the report viewer, since the concept of printable 'pages' does not apply to the report until it is rendered for print.
Header and footer controls can accept HTML to create custom content.