Is there any way to crop in Illustrator?

[kymg]

I feel like this ought to be a simple process but I can't figure out how to crop an image in Illustrator. Do I need to crop the image in a different program and then bring it into Illustrator, or is there a way to crop in Illustrator? Sorry if this is a dumb question with a really obvious answer I am missing.

[Ton Frederiks]

You are probably talking about something different than cropping images or using a very old version of Illustrator.