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480: Mainline

Visually, the action of the bad_price_bit | bad_size_bit mask is to block passage:

*-*-*-*-*-*-*-*-*   
|0|0|0|0|1|0|0|1|       <-- Sample status value 
*-*-*-*-*-*-*-*-* 
 | | | | | | | |  
 v v v v v v | | 
 - - - - - - v v  
*-*-*-*-*-*-*-*-*   
|0|0|0|0|0|0|1|1|       <-- Mask 
*-*-*-*-*-*-*-*-* 
             | | 
             v v 
*-*-*-*-*-*-*-*-*   
|0|0|0|0|0|0|0|1|       <-- Result 
*-*-*-*-*-*-*-*-*