what does "citing" here mean? in my experience if a job has, say, ruby, odds are it's a ruby job, if it has python often it's a job on something completely diff

what does "citing" here mean? in my experience if a job has, say, ruby, odds are it's a ruby job, if it has python often it's a job on something completely different where at the bottom they put "familiarity with scripting (python, perl) is an asset"