text: # R Environment
  
  # The operators <- and = assign into the environment in which they are # evaluated. The operator <- can be used anywhere, whereas the operator = is only allowed at the top level (e.g., in the complete expression typed at the command prompt) or as one of the subexpressions in a braced list of expressions.
  
  #Control + Enter to execute Line by line
  x1 = 1:5
  x1
  x2 <- 1:5
  x2
  (x3 = 1:5)  # assign and print to screen
  
  