As in the previous iterations, each level has three hidden medals to find and collect, and many levels have several exits that open up optional paths with optional levels.
What does O stand for?
O stands for Optional Levels (board test for high schoolers, UK)
This definition appears frequently
See other definitions of O
- Ohne Hauch (antigen)
- Omikron (German: Omicron; 15th letter of the Greek alphabet)
- Operator (telephone)
- Oprah (magazine)
Samples in periodicals archive:
As such, most leading SaaS providers typically offer both antispam and antivirus protection, with optional levels of defense.