text: from __future__ import absolute_import, division, print_function
  
  # LIBTBX_SET_DISPATCHER_NAME boost_adaptbx.show_environ_usage
  
  import sys
  
  def run(args):
    assert len(args) == 0
    print("""
  BOOST_ADAPTBX_SIGNALS_DEFAULT
    If NOT set, enable Python and libc call stack traces if possible.
  BOOST_ADAPTBX_FPE_DEFAULT
    If NOT set, trap floating-point exceptions if possible.
  BOOST_ADAPTBX_FE_DIVBYZERO_DEFAULT
  BOOST_ADAPTBX_FE_INVALID_DEFAULT
  BOOST_ADAPTBX_FE_OVERFLOW_DEFAULT
    If NOT set, trap FE_DIVBYZERO|FE_INVALID|FE_OVERFLOW if possible.
    See also: man fenv
  
  BOOST_ADAPTBX_DOCSTRING_OPTIONS
    Example:
      setenv BOOST_ADAPTBX_DOCSTRING_OPTIONS "show_user_defined=True,show_signatures=False"
  """)
  
  if (__name__ == "__main__"):
    run(sys.argv[1:])
  