Adding a Route Description

According to the RW Tools manual, there should be an option to "Add a Route Description" under the "Route Building Tools" drop-down menu. However, I don't see such an option.

Has something been changed since the manual was written? Does something need to be set up in advance before I can add a description?
Or I might just be missing something from lack of sleep

Has something been changed since the manual was written? Does something need to be set up in advance before I can add a description?
Or I might just be missing something from lack of sleep
