You just pressed two keys at once, or pressed the Shift key 5 times in a row. This turns off the Sticky Keys feature, which affects the way your keyboard works.
EnglishTranslators: this is a time format string followed by a date.
If applicable, replace %X with a strftime format valid for your
locale, without seconds.
Englishtranslators: first argument is the name of a contact and the second
* one the name of a room. "Alice is inviting you to join [email protected]
* for example.