The wiki's support for the Creole syntax is fully compatible with the Creole 1.0 specification. For reference, see:
Bitbucket wikis support Markdown, Creole, reStructuredText, and Textile syntax. The Bitbucket macros work only in wikis that use the Creole markup language. The macro format is a single keyword surrounded by angle bracket characters:
See Macro Reference for Creole Markup for a list of the macros and their syntax.
Comments and messages all use Markdown syntax. There is special Bitbucket markup that you can use to link to Bitbucket objects from comments and messages.
Use syntax highlighting in a wiki