P3D Point and Face Flags
These 'flags' (or attributes) are present in the following p3d's
Point Flags
These correspond to O2L 'Point Properties' 
NHUUFdLS 
       Surface
        xxxxxxx0 normal
        xxxxxxx1 on surface 
        xxxxxxx2 above 
        xxxxxxx4 under 
        xxxxxxx8 keep height(fence)
      Lighting Face
        xxxxxx0x normal
        xxxxxx1x shine
        xxxxxx2x always in shadow
        xxxxxx4x full light
        xxxxxx8x half light
     decal
       xxxxx0xx normal
       xxxxx1xx decal (obsolete for A2)
       xxxxx2xx radio12 (OFP only)
    Fog
       xxxx0xxx none :ofp normal
       xxxx1xxx sky  :ofp none
       xxxx2xxx normal :ofp sky
  User xxUUxxxx user 0..255 (obsolete for A2)
 H     x1xxxxxx hidden vertex
Normals
       x0xxxxxx by face
       x2xxxxxx fixed (normal)
       x4xxxxxx by impedence
Face Flags
Corresponding to O2L 'face properties'. 
Enable shadow
0x00000010 - off (disable shadow)
Enable texture merging
0x01000000 - off (disable texture merging)
ZBias (0x00000300 mask)
0x00000000 - none 0x00000100 - low 0x00000200 - middle 0x00000300 - high
Lightning (0x003000a0 mask)
0x00000020 - both sides 0x00000080 - position 0x00200000 - flat 0x00100000 - reversed (transparent)
User (0xfe000000 mask)
0xfe000000 - user additional mark value (0..127)