Scala REPL help

 scala> :help All commands can be abbreviated, e.g. :he instead of :help. Those marked with a * have more detailed help, e.g. :help imports.  :cp                  add a jar or directory to the classpath :help [command]            print this summary or command-specific help :history [num]             show the history (optional num is commands to show) :h?                search the history :imports [name name ...]   show import history, identifying sources of names :implicits [-v]            show the implicits in scope :javap         disassemble a file or class name :load                load and interpret a Scala file :paste                     enter paste mode: all input up to ctrl-D compiled together :power                     enable power user mode :quit                      exit the interpreter :replay                    reset execution and replay all previous commands :reset                     reset the repl to its initial state, forgetting all session entries :sh          run a shell command (result is implicitly => List[String]) :silent                    disable/enable automatic printing of results :type [-v]           display the type of an expression without evaluating it :warnings                  show the suppressed warnings from the most recent line which had any