Termini '''foobar''' (č. „fubar”; {{IPA-all|ˈfuːbɑr}}), -{'''fubar'''}- (č. „fubar”) ili -{'''foo'''}- (č. „fu”), -{'''bar'''}- (č. „bar”), -{'''baz'''}- (č. „baz”) i '''qux''' (č. „kjuks”) (alternativno, -{'''quux'''}- (č. „kvaks”)) i ponekad '''norf''' (č. „nourf”))<ref>{{Cite web|url=http://www.vidyokarma.com/article.php?c=R-programming-language&page=1 |title=vidyokarma.com |accessdate=17. 12. 2015 |archive-url=https://web.archive.org/web/20150107131953/http://www.vidyokarma.com/article.php?c=R-programming-language&page=1 |archive-date=7. 1. 2015 |dead-url-status=yesdead }}</ref><ref>{{Cite web|url=http://rstudio-pubs-static.s3.amazonaws.com/43080_1d7db6d9f7044c8bae0e6a7f90c563cc.html |title=rstudio-pubs-static.s3.amazonaws.com |accessdate=17. 12. 2015 |archive-url=https://web.archive.org/web/20160529035600/http://rstudio-pubs-static.s3.amazonaws.com/43080_1d7db6d9f7044c8bae0e6a7f90c563cc.html |archive-date=29. 5. 2016 |dead-url-status=yesdead }}</ref><ref>[http://mathalope.co.uk/2015/03/08/swirl-r-programming-lesson-6-subsetting-vectors/ mathalope.co.uk]</ref><ref>[http://www.perlmonks.org/?node_id=1116433 perlmonks.org]</ref> i još drugih termina<ref name="hackerdict">[http://www.dourish.com/goodies/jargon.html dourish.com]</ref><ref>[http://www.catb.org/jargon/html/M/metasyntactic-variable.html catb.org]</ref> ponekada se koristi kao [[plejs-holder]] (egzemplifikant, takođe poznat i kao [[metasintaktička varijabla]]) u [[Programiranje|programiranju]] ili dokumentacijama vezanim za računarstvo.<ref name="rfc3092">{{cite web-lat|url=http://www.ietf.org/rfc/rfc3092.txt|title=Etymology of "Foo"|author=D. Eastlake III|year=2001|publisher=Internet Engineering Task Force|accessdate=5. 11. 2007|display-authors=etal}}</ref>
