Here's the submission guidelines:
The rights section:
"The quarterly is published as print and ebook, and at the end of the year all the quarterlies are bound together in an annual collection. We are asking for non-exclusive, worldwide, serial rights to your work for both electronic and print. We want to publish it, we donít want to own it."
I'm planing to submit a short story to them. So, should I be asking them how long they have these rights for? Anything I should be careful with? What else should I be asking?