Formal communication within an organization flows through official channels as defined in the organizational chart. It can be vertical between superiors and subordinates, horizontal between peers, and can be oral or written. Vertical communication is upward from subordinates to superiors, like submitting progress reports, or downward from superiors to subordinates, like passing guidelines. Horizontal communication is between different divisions, like discussing product delivery schedules. The patterns of formal communication flow are represented by different networks, such as single chain, wheel, circular, free flow, and inverted V.