The smc package implement abstractions that make it easy to work with shared-memory in
      a concurrent setting.
The smc package is located under the pkgsrc directory
      in the Slogan source tree. You can install it from the REPL using the install_package
      function:
install_package("smc", 'local, "/path_to_slogan_src/pkgsrc/smc")
      Once installed, the package can be loaded to a program by calling the load_package
      function.