Prof.\ Smith or Jones et al.\ (1993) 

can be displayed when concealment is active as

Prof. Smith or Jones et al. (1993) 

\@

capital-letter\@. Treat a period as sentence-ending, where LATEX would otherwise think it is part of an abbreviation.

Example

The songs \textit{Red Guitar}, etc.\ are by Loudon Wainwright~III\@. 

can be displayed as

The songs Red Guitar, etc. are by Loudon Wainwright III.

Again, the unofficial latex reference manual describes these in chapter 19.

https://latexref.xyz/_005c_0040.html
https://latexref.xyz/_005c_0028SPACE_0029.html