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Start by searching, it might be the case that already is an issue that addresses the same concern. If you do not find anything, then create a new JIRA issue. Trivial bug fixes, typo fixes, code cleanup can be immediately followed by the pull-request. Anything over that will be thoroughly discussed before even be considered by the maintainers. Discussion can be done directly over the issue, but if you prefer there is a IRC channel: #fenixedu at chat.freenode.net
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