input: [EITAS] 1194.23(k.4) [Category] Telecommunications Products [Supporting Features] Not Applicable. BNCollege.com platform does not have mechanically operated controls or keys that lock or toggle. [Summary of Supported] Not Applicable [Section 508 Rule] 
output: The status of all locking or toggle controls or keys shall be visually discernible, and discernible either through touch or sound.