Mention the mistake and be honest about it, but always make sure that you follow it up with what you learnt from that episode and the improvements it has brought to your efficiency.
OTT stands for 'Over-The-Top' is a term in media industry for the delivery of film and TV content via internet. It doen't require any users to subscribe to a traditional cable or satellite pay TV service.
Examples for OTT players include Netflix and Amazon Prime.
Use SAVE when you want to update the lastly preserved or to revise an existing document or file with the latest content.
Whereas
Use SAVE AS when you are creating a new document/file or an existing document/file to a new location. This will keep the original document untouched in its original format and create a new document with a new name.