File - Open

          Open -- The File Menu option Open is a context
          sensitive option.  The  Open option and double
          clicking on an item with the mouse have the same
          results.  The file type of the selected item
          determines the action that the Open option
          invokes.  The File Open option has the following
          effect for each of these file types: (See the
          Action Menu for a complete list and alternative
          actions for each file type)
     
          ASCII files -- When the file selected is an ASCII
          file the File menu Open option opens the editor.
          The selected file is the parameter of the editor
          execution.  Note that the Actions Menu has an
          option to spell check a selected ASCII file.
          
          .c files -- The File menu Open option opens the
          editor.  The selected .c file is the parameter for
          the editor execution.  Note that the Actions menu
          has the option to compile a .c file.
          
          CPIO files -- The File menu Open option lists the
          files within the CPIO file to the terminal window.
          Note that the Actions menu has the option to
          extract the individual files from this file
          structure.
          
          Packed files -- The File menu Open menu option
          shows the contents of a packed file in a terminal
          window.  Note that the Actions menu has the option
          to unpack the file.
          
          Compressed files -- The File menu Open option
          shows the contents of a compressed file in a
          terminal window.  Note that the Actions menu has
          the option to uncompress this file.
          
          Libraries - The File menu Open option lists the
          individual object files that make up the library.
          Note that the Actions menu has the option to
          convert to random (ranlib).
          
          Postscript files -- The File menu Open option
          opens the editor with the selected file as a
          parameter.  Note that the Actions menu has the
          option to print the selected postscript file.  The
          editor allows the user to view the contents of the
          postscript file.
          
          Executable Files - The File menu Open option opens
          a copy of the terminal emulator (xterm) and runs
          the executable from there.  Note that the Actions
          Menu includes the ability to run an executable
          program without running a copy of xterm.
          
          Object File -- No action
          
          TAR file -- The File menu Open option provides a
          list of the files in the TAR file.  Note that the
          Actions menu includes the option to extract the
          individual files from the composite TAR file.
          
          makefile -- The File menu Open option executes the
          editor to edit a makefile.  Note that the Actions
          menu includes the option to execute the command
          make.
          
          Directory - The File menu Open option, when the
          selected file is a directory, is equivalent to
          changing from the current directory to the
          selected directory.
          
          OpenScript - The File menu Open option invokes the
          shell interpreter (sh)  to execute the script.
          Note that the Actions menu for Openscript files
          includes the option to edit the file.
          
          Shell script(sh) -- The File menu Open option
          executes the shell script. Note that the Actions
          menu for shell script files includes the option to
          edit the file.
          
