Hi,
Only Markup Language destinations have tags or dot commands that you can change. ODS Markup includes (but is not limited to) HTML, WML, TROFF, LaTex, Pyx, XML, etc.
The RTF destination will allow you to insert RTF control strings IF you know the correct ones, but even then, sometimes you cannot get to the right place to insert the control string in the current method of creating RTF output files. The PDF destination produces a proprietary (to Adobe) format file and there are not any "control" strings available for PDF the way there are for HTML or RTF.
When "measured" RTF comes down the road in SAS 9.2, things will improve in this regard.