One of the highly visible changes in SAS 9.3 is the fact that the old LISTING destination is no longer the default destination for ODS output. Instead, the HTML destination is the default.
One positive consequence of this is that ODS graphics and tables are interlaced in the output. Another is that complicated tables are easier to read because SAS can use styles (colors, fonts, and cell shading) to make tables more readable. For example, the row and column headings of a table might be a different color than the cells of the table.
However, if you are like me, you occasionally like to clear the output window so that it doesn't get too crowded. In SAS 9.2, clearing the Output Window (by which I mean the LISTING destination) in the SAS Windowing Environment was easy: select Edit > Clear All or select the Output Window and click the New icon (or File > New).
I assumed that I could clear the HTML Results Viewer in SAS 9.3 the same way, but as the following image shows, the Edit > Clear All menu item is disabled!
No worries, though. You can clear the Results Viewer programmatically by submitting the following statements:
ods html close; /* close previous */ ods html; /* open new */
The Results Viewer will not immediately look empty, but the next time that you generate output you will see that the Results Viewer no longer includes the older content.
There is a SAS Usage Note that describes other ways to clear the contents of the Results Viewer. Thanks to the fine folks on the SAS-L Mailing List for asking this question and for linking to the SAS Knowledge Base article.
Update, Fall 2012: This problem is FIXED at SAS 9.3M2 (the 12.1 release for SAS/STAT, SAS/ETS, SAS/IML, etc.). At 9.3M3 you can just choose Edit > Clear All from the main menu and the HTML output is cleared. *Phew!*