Switches into View Mode and to examine the specified buffer. If the specified buffer name is blank, View Mode examines the current buffer.
Views the specified file. The file is read into an Emacs buffer, which is removed upon exiting from View Mode.
Visits the specified file. If the file is already read into a buffer, Emacs pops up a new window and displays the buffer. Otherwise, a new buffer is created, the file is read in and is displayed in a new window.
Returns some process statistics for the process running Emacs.