what does the keyword "internal" mean ? ?

Answer 1

std::left, std::internal, and std::right are stream manipulator used to adjust padding position for specified width output. Further details over these can be found in the following reference:

http://www.cplusplus.com/reference/ios/internal/

Answer 2

I'm asking about a keyword, not a function

Answer 3

Sorry I misunderstood you. Do you have a snippet I can read, where this 'internal' keyword is used, I need to see it in the context when & how it is used.