How can I hide these red boxes around my components

[PGavey]

I'm very new to Illustrator so this may be an easy fix, but I couldn't find anything on any forums that could help me. I am getting these red boxes around various components of the artwork that I am unable to select/hide and they're getting quite annoying to work around. I currently have all of my layers hidden. How can I hide/delete these boxes?

[Doug A Roberts · Accepted solution]

Those are slices, for exporting a document as separate elements for web. You may have inadventently used the slice tool at some point.

Go to View > Hide Slices