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[EnergyPlus_Support] COMIS AIR FLOW:OPENING=>Discharge coefficient ?

My understandings are:
For a typical door,
When a door is closed, Opening Factor=0.0; Discharge coeff =0.0
When door is fully open, Opening Factor=1.0; Discharge coeff =1.0
So why the discharge coeff are 0.5 and 0.6 in the example file ?
I must missed something.
Thanks for correcting my understandings.

     0.0,  !- Opening factor #1 {dimensionless}
     0.5,  !- Discharge coefficient for opening factor #1 
     0.0,  !- Width factor for opening factor #1 
     1.0,  !- Height factor for opening factor #1 
     0.0,  !- Start height factor for opening factor #1 

     1.0,  !- Opening factor #2 {dimensionless}
     0.6,  !- Discharge coefficient for Opening factor #2 
     1.0,  !- Width factor for for Opening factor #2 
     1.0,  !- Height factor for for Opening factor #2 
     0.0,  !- Start height factor for for Opening factor #2 

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