The new plan would set aside an additional 27% of places in educational institutions for Other Backward Classes (OBCs) - lower caste Hindus and other traditionally disadvantaged groups.

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Based on the surnames - which usually give away caste affiliation - of the members of these company boards, the intrepid researchers classified them into Forward Castes, Other Backward Classes (OBCs), Scheduled Castes and Tribes and foreign directors.

BBC: Why Indian boardrooms have no diversity