c2b8f80e_NB_XWIN___SELinux_Wiki__Function_Name
[Minor Opcode] 13 [Parameters] WindowID + AtomID [Comments] Get the context of the property data. This could be the policy default or that set by the SELinuxSetPropertyCreateContext (9) function. [Function Name] 
SELinuxGetPropertyDataContext
NB XWIN - SELinux Wiki