4 Basic functionality for parallel computation
  
  This  page covers the functions used for parallel computation in the book An
  Invitation               to              Computational              Homotopy
  (
  https://global.oup.com/academic/product/an-invitation-to-computational-homotopy-9780198832980
  ).
  
  
  4.1 Six Core Functions
  
  4.1-1 ChildCreate
  
  ChildCreate(  )  function
  ChildProcess( str )  function
  ChildProcess( str )  function
  ChildProcess( str )  function
  
  Starts  a  GAP  session as a child process and returns a stream to the child
  process.  If  no  argument is given then the child process is created on the
  local     machine;     otherwise     the    argument    should    be:    (1)
  str="computer.address.ie" the address of a remote computer for which ssh has
  been  configured  to  require  no  password  from  the  user; (2) str=["-m",
  "100000M",    "-T"]    a   list   of   GAP   command   line   options;   (3)
  str="computer.ac.wales",  ["-m",  "100000M", "-T"] the address of a computer
  followed by a list of command line options.
  
  Examples:
  
  4.1-2 ChildCreate
  
  ChildCreate(  )  function
  ChildProcess( str )  function
  ChildProcess( str )  function
  ChildProcess( str )  function
  
  Starts  a  GAP  session as a child process and returns a stream to the child
  process.  If  no  argument is given then the child process is created on the
  local     machine;     otherwise     the    argument    should    be:    (1)
  str="computer.address.ie" the address of a remote computer for which ssh has
  been  configured  to  require  no  password  from  the  user; (2) str=["-m",
  "100000M",    "-T"]    a   list   of   GAP   command   line   options;   (3)
  str="computer.ac.wales",  ["-m",  "100000M", "-T"] the address of a computer
  followed by a list of command line options.
  
  Examples: