Our most productive hours aren't always from 9 to 5, or even when we're at the office. That's why our time in transit has become an important part of our workday. But what happens when you're traveling through places without Wi-Fi or cell reception? Those interruptions can slow down your workflow, but they don't have to bring it to a complete standstill. Here's how Paper's new offline mode feature can help you get work done anytime, anywhere.