This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Thread.add_trace_func (from ruby core) --- thr.add_trace_func(proc) -> proc --- Adds *proc* as a handler for tracing. See Thread#set_trace_func and Kernel#set_trace_func.
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.