What does an ideal team player look like?

“Team player”. A typical requirement in ads for any kind of job vacancy. Virtually everyone must be able to work in a team – warehouse keeper, programmer or air traffic controller. Few people would deny being a team player, which is why it is up to the recruiter to assess, based on the personal traits of the candidate, whether or not this is really true. But what does an ideal team player actually look like and what are their personal characteristics?