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

Socket::AncillaryData 

        # Socket::AncillaryData < Object

(from ruby core)
---
Socket::AncillaryData represents the ancillary data (control
information) used by sendmsg and recvmsg system call.  It contains
socket #family, control message (cmsg) #level, cmsg #type and cmsg
#data.
---
# Class methods:

    int
    ip_pktinfo
    ipv6_pktinfo
    new
    unix_rights

# Instance methods:

    cmsg_is?
    data
    family
    inspect
    int
    ip_pktinfo
    ipv6_pktinfo
    ipv6_pktinfo_addr
    ipv6_pktinfo_ifindex
    level
    timestamp
    type
    unix_rights

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.