[users] WRITER: Search for Special Characters, Invisible Characters, Character Styles, Markers of Type X

[VLM TechSubs]

We are exploring the search (ctrl-f) function in Writer. We see how to
search for many things, but not yet for special characters (em dash,
ellipsis), invisible characters (end of paragraph and the like), character
styles, or for, say, markers of a given type. 
 
I do see the checkbox for "Search for Styles", but this seems only to make
available paragraph styles and nothing else. 
 
I feel certain we are simply missing something. How can we conduct such
searches?
 
Thank you kindly,
Elchanan