When the information you want to share with other project members does not fit
neatly into a tracker comment or a document review, use a Wiki page for a more free-form
communication flow.
After a Wiki is created, any user with the Wiki create, edit, or view
permission can add or edit Wiki content. You can also add associations or
attachments, or create additional Wiki pages.
Note: You can delete sections of the
existing content, but you cannot delete all of it and start over with a new,
blank Wiki.