Help for uno commands

The available Uno commands are:

/start uno discussion:  Starts a new game in discussion        
/end discussion:        End current game in discussion         
                                                               
/challenge:             Challenge a Draw Four                  
/color color:           Select a new color after playing a Wild
/deal:                  Start a new round                      
/draw:                  Draw cards from the deck               
/hand [on|off]:         Auto-display hand on or off            
/keep:                  Keep the card just drawn               
/order:                 Display order of players               
/play [card]:           Play a card from your hand             
/rules:                 Display rules of Uno                   
/score:                 Display current scores                 
/top:                   Display the top card on the pile       
/turn:                  Tell whose turn it is                  
/uno:                   Say "Uno" before playing next card