ugd                     A unified R graphics backend.
ugd_clear               Clear all unigd plot pages.
ugd_close               Close unigd device.
ugd_id                  Query unigd plot IDs
ugd_info                unigd device information.
ugd_remove              Remove a unigd plot page.
ugd_render              Render unigd plot and return it.
ugd_render_inline       Inline plot rendering.
ugd_renderers           unigd device renderers.
ugd_save                Render unigd plot to a file.
ugd_save_inline         Inline plot rendering to a file.
ugd_state               unigd device status.
ugd_test_pattern        Plot a 16-panel test pattern for evaluating
                        graphics devices.
unigd-package           unigd: Universal graphics device
