Can I edit an existing logo (its an EPS file) I purchased on line?
You can open or embed an EPS file in Illustrator. If the file was created in another application, Illustrator converts all objects to native Illustrator objects. If the file contains data that Illustrator does not recognize you may lose some data.
Here's a Help document on this topic that may be useful: http://help.adobe.com/en_US/illustrator/cs/using/WS714a382cdf7d304e7e07d0100196cbc5f-6569a .html
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