Newline in gridTextColumn

I'm using a gridField and would like to display data within a gridTextColumn, where each item in a list gets its own line within the gridTextColumn. In a paragraph field, you can use char(13), but apparently this won't work in a gridTextColumn. Any thoughts?

To reiterate, I do not want to have each item in my list as its own row in the grid. I want each item in the list to be on a new line within one row.

Thank you,

Jake