Adopted formatting choices

The user’s guides source files were written according to the following formatting conventions:

>>>*********** >>>Page Titles >>>***********

>>>| ******* >>>| Page Titles >>>| *******

>>>Section Titles >>>==============

>>>| Section Titles >>>| ==============

>>>Subsection Titles >>>—————–

>>>| Subsection Titles >>>| —————–

>>>.. describe:: Lists of commands

>>>| .. describe:: Lists of commands

>>> Tables

>>>======== ========== ========== >>>Col1 Col2 Col3 >>>——– ———- ———- >>>unit unit unit >>>======== ========== ========== >>>Text1 1 1 >>>Text2 2 2 >>>======== ========== ==========

>>>| ======== ========== ========== >>>| Col1 Col2 Col3 >>>| ——– ———- ———- >>>| unit unit >>>| ======== ========== ========== >>>| Text1 1 1 >>>| Text2 2 2 >>>| ======== ========== ==========