c2b8f80e_NB_XWIN___SELinux_Wiki__Function_Name
[Minor Opcode] 20 [Parameters] AtomID [Comments] Get the context of the selected data. This could be the policy default or that set by the SELinuxSetSelectionCreateContext (15) function. [Function Name] 
SELinuxGetSelectionDataContext
NB XWIN - SELinux Wiki