This page in a nutshell: If in doubt, fix it.
The Wiki philosophy, and BZFlagWiki particularly, encourages users to be bold in updating articles. Wikis develop faster when people fix problems, correct grammar, add facts, make sure the wording is accurate, etc. We expect everyone to be bold. How many times have you read something and thought, "Why aren't these pages copy-edited?" BZFlagWiki not only allows you to add, revise, and edit the article — it wants you to do it. It does require some amount of civility, but it works. You'll see.
Also, of course, others here will edit what you write. Don't take it personally. They, like all of us, just want to make the BZFlag Wiki as good as it can possibly be. Bring out all information that you can.
…but don't be reckless.
If you anticipate a disagreement with your version of the article, and you want to change or delete a large amount of the text, it's a good idea to list your objections one by one in the talk page, reasonably quoting the disputed phrases, explaining your reasoning, and providing solid references.
Then, wait for responses for at least a day: people edit the BZFlag Wiki in their spare time and may not respond immediately. If no one objects, proceed, but always list your objections to the text so that other people will understand your changes and will be able to follow the history of the page. Also be sure to leave a descriptive edit summary detailing your change and reasoning.
Additional information can be found at the Content Policy page.
Categories and templates
Although it is generally fine to be bold in updating articles, being bold in updating or creating categories and templates, especially templates, can often be very bad. This is because category changes - and even more so template changes - can affect a large number of pages. In the case of templates, changing code on one template that is very widely used can potentially cause problems for BZFlagWiki's servers. It is usually worth proposing any changes to categories and/or templates on talk pages prior to making any change.