Wikipedia:FLAG
You may be looking for:
- The MediaWiki software feature Wikipedia:Flagged revisions
- The WikiProject that deals with flags and heraldry, Wikipedia:WikiProject Heraldry and vexillology
- The flag icon templates project, Wikipedia:WikiProject Flag Template
- The guideline about use of such flag icons in articles, Wikipedia:Manual of Style/Icons § Flags
- WP:BOTFLAG