【正文】
permission can not be given to non member or anonymous users. Anonymous: this role lets you define the permissions that anonymous users have on the projects.Note that these 2 roles only apply to public projects since anonymous users and users who are not member of a private project can not even see it.Some permissions can be not given to these roles. For example, the 39。. They are internally used by Redmine and thus can not be deleted. and 39。Manage wikiAllow user to create or delete the project wikiDeleting a wiki is an irreversible operation, it deletes all pages and attached files!Rename wiki pagesAllow user to rename existing wiki page or assign wiki pages to a parent pageDelete wiki pagesAllow user to delete wiki pagesDeleting a wiki page is an irreversible operation, the page and all its history are deleted!View wikiAllow user to view the wikiView wiki historyAllow user to view older versions of the wiki pages, and diff between versionsEdit wiki pagesAllow user to edit unprotected wiki pagesDelete attachmentsAllow user to delete existing wiki page attachmentsProtect wiki pagesAllow user to lock/unlock wiki pages, and edit locked pagesSystem rolesThere are 2 system roles in Redmine: 39。Manage repositoryAllow user to configure the project repositoryBrowse repositoryAllow user to browse and view the content of the project repositoryView changesetsAllow user to view the chengesetsCom