Add punctuation: The question is however whether a festival like Arctic Sounds is able to turn the periphery into a center if only for a while
A: The question is however, whether a festival like Arctic Sounds is able to turn the periphery into a center, if only for a while.

Add punctuation: Holiday House for rent Vingker Stockholm Sweden From vacation rental agency
A: Holiday House for rent Vingaker Stockholm Sweden - From vacation rental agency

Add punctuation: where 5 is the number of messages to save If n is not specified all available messages sent to the current room will be taken into account
A:
where '5' is the number of messages to save. If n is not specified, all available messages sent to the current room will be taken into account.