OS/360 Object File Format
The OS/360 Object File Format is the standard object module file format for the IBM DOS/360 , OS/360 and VM/370 , Univac VS/9 , and Fujitsu BS2000 mainframe operating systems . 
<triplet> DOS/360 <subj> IBM <obj> developer <triplet> VS/9 <subj> Univac <obj> developer