The "Articles of Incorporation" is the document filed with a state government that officially begins the existence of a corporation. Articles of Incorporation typically cover the following topics:
The name of the corporation (which has to be approved by the Secretary of State)
The purpose of the corporation (typically "any lawful activity")
The authorized number of shares of stock
Whether there is preferred stock
The name & address of the registered agent for service of process
Limitations on liability of the directors and management
The rights, preferences, privileges and restrictions on any class of stock