From StrategyWiki, the free strategy guide and walkthrough wiki

All menus and functions can be utilized by using the mouse and different keyboard shortcuts. Player functions can be controlled through various window interfaces.

• Basic Info
• Inventory - Alt+E or Ctrl+E
• Skill Tree - Alt+S
• Status - Alt+A or Ctrl+A
• Equipment - Alt+Q or Ctrl+Q
• Shortcut Keys - F12
• To make a Room - Alt+C
• Mini-map - Ctrl+Tab
• Party - Alt+H
• Chat - F10
• Option - Alt+O or Ctrl+O