Man pages matching name manipulators in section 3bobcat:

manipulators.3bobcat.en	debian 10 / libbobcat-dev
manipulators.3bobcat.en	debian 11 / libbobcat-dev
manipulators.3bobcat.en	debian 12 / libbobcat-dev
manipulators.3bobcat.en	debian 13 / libbobcat-dev