Just to say it one more time. When you work in Standard view:
To add a paragraph type marker (p, q, s, r, mt, b, etc) you would normally press the Enter key and then you will see a list of paragraph type markers.
To add a character type marker (bd, add, ft, v, etc) you would normally press the \ key and then you will see a list of character type markers.
In either case you can press Enter or \ and then manually enter the marker you want followed by the space key.
The exception to this is that if you highlight a text and press the \ key you can add character markers around the highlighted text. If you highlight text and press the Enter key the text will be replaced by a new line.