Formal rules for the game were not written until 1988.

Laws are perhaps the best example of written, formal rules.

Being a good person is not about seeking to follow formal rules.

Today's formal rules have been around for only a few generations.

Formal rules soon were developed, and clubs began to form.

This is not a formal rule or law, however, only a tradition.

The formal rules for the Indian version of the game were published in 1988.

The formal rules of evidence and procedure do not apply.

Formal rules and regulations were also adopted at this time.

At the time there were no formal rules for football games, with different schools and areas playing their own variations.