showlock question

[Enrique Arredondo]

When I run showlock on a file, it gives me this output, what does 10179 
means ? Is it the first record locked process ID ?

/usr2/appl/filepro/WRITEUP/key:
     0002a19f 00000004 10179
     0002d26e 00000004 28602
     0002dc31 00000004  2823
     0002efb7 00000004 12987
     0003033d 00000004 27792
     000316c3 00000004 23961
     00032a49 00000004 12110
     000364db 00000004 26929
     00036e9e 00000004 23326
     00038224 00000004 12548
     000395aa 00000004 25609
     00039f6d 00000004  5201
     0003b2f3 00000004 26244