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

sysaccept 

        # TCPServer.sysaccept

(from ruby core)
---
    tcpserver.sysaccept => file_descriptor

---

Returns a file descriptor of a accepted connection.

    TCPServer.open("127.0.0.1", 28561) {|serv|
      fd = serv.sysaccept
      s = IO.for_fd(fd)
      s.puts Time.now
      s.close
    }

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.