Is there a line one can edit to limit barbarian's tech?

[Orion43]

I'd like to keep the barbs from getting better units than swordsman. Thanks for any help.

 

[snarko]

CIV4CivilizationInfos.xml, either disable the techs themselves using the <DisableTechs> tag or disable the units, like there already are alot of units disabled for them.