The U.S. Supreme Court ruled in 2005, however, that federal authorities could continue under federal law to prosecute California patients and providers engaged in the cultivation and use of marijuana for medical purposes.
A quick guide to using the colon. A colon is made up of two dots, one placed above the other. One common use of the colon is to introduce a list of items. For example: To make the perfect jam sandwich you need three things: some bread, butter and strawberry jam. Three items are listed in the sentence above.
Place a comma after the salutation in a letter. If the letter is of a formal business nature, a colon may be used instead of a comma in the salutation. For example: Dear Mr. Peterson, Dear Mr. Peterson: When to Use Semicolons. Here are two semicolon rules you'll want to know about. A semicolon should be placed between two independent clauses. For example: