1.   For over a century the square has been used for public speeches, gatherings, and festivals advocating and celebrating a variety of causes, both secular and religious.

2.   In the move toward ethical captioning, the American Society of Picture Professionals has endorsed using a square with a circle and diagonal slash to mark manipulated images.

3.   This, however, is easy if you use a framing square with a pair of stair gauges.

4.   To use the square, a group must simply fill out an official application form and meet several speech-neutral criteria.

5.   Use bonus squares strategically and try to combine them.

6.   Relatives of victims of Soviet-era purges whose remains were never found use the square as a symbolic gravesite, bringing flowers every year.

7.   Relatives of victims whose remains were never found use the square as a gravesite, bringing flowers every year.

8.   The square is used for celebrations and military marches attended by President Saddam Hussein.

9.   Using the square as a backdrop for improved Chinese-U.S. relations could help China erase the stigma of the violent military assault on democracy protests nine years ago.