The Control Panel was the one, the central program on Macs which controlled all system settings and preferences. The control panels (note lowercase "p") as individual panels in their own, separate windows, were only introduced with System 7.
Control Panel (System 1.0)
Along with System 1.0 came the very first Control Panel DA. It was only one screenful -- and was filled with tiny buttons and some very confusing icons. There were no panes of any kind.
In one cramped window, settings for the following system options could be set:
- system volume
- date and time
- menu blinking
- insertion point blinking speed
- keyboard settings
- mouse acceleration
- desktop pattern
- double-click speed
Control Panel (System 6)
System 6's Control Panel had panes at the leftmost of the main window so that settings could be set for each major, topic-separated item in a separate pane (but within the same window).