This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.

wakeup 

        # Thread.wakeup

(from ruby core)
---
    thr.wakeup   -> thr

---

Marks a given thread as eligible for scheduling, however it may still
remain blocked on I/O.

**Note:** This does not invoke the scheduler, see #run for more
information.

    c = Thread.new { Thread.stop; puts "hey!" }
    sleep 0.1 while c.status!='sleep'
    c.wakeup
    c.join
    #=> "hey!"

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.