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, {{section link|Wikipedia:Manual of Style/Icons|Flags}}
WP:BOTFLAG