Click this button to move from no compression to maximum compression. Right-click to move the other way.
There are four compression modes:
| 
       
  | 
    
       No compression (default).  | 
| 
       
  | 
    
       Compress to hide gap but show nearest best bid and ask prices: price rows are hidden if they are between the price in DOM ladder below best bid and the price above the best ask.  | 
| 
       
  | 
    
       Compress to hide market gap: price rows are hidden if they are between the best bid and best ask.  | 
| 
       
  | 
    
       Compress to hide empty prices: price rows are hidden if they are between rows with DOM values. All bids and asks are displayed without gaps.  | 
This tool is displayed by default. To remove it, go to Trading Preferences > Order Placement > Enable Split Market tool.