In the html FAQ we specifically went and used back ticks to separate the double dash so that it is more readable like this `--`. It was there all along in the ASCII text file version as "--" . Some text based chat programs do not do the display or conversion on every system with clarity.  This is why it's easier to read on a html web page as the unique back ticks make it more readable.  The FAQ is available at: https://arqma.com/faq/ . Go see for yourself if you like.
 
Also, the text to the right in parenthesis in the ASCII version of the FAQ says that it is a double dash. Which is a typical way of passing parameters in Linux based applications.
FAQ Quote:
Also, you can access a GUI wallet created with the CLI application using either the mnemonic seed phrase, or the address and your private spend key.
Just execute the CLI daemon, then execute the wallet cli with the following parameter:
"arqmad.exe"  (Run the daemon first)
"arqma-wallet-cli —restore-deterministic-wallet"   (double dash means it's an option command at the cli/cmd prompt.)
EndQuote:

You can see a screenshot of the new and improved formatting here: https://imgur.com/gallery/3iaoXmO

Hope this clears things up. You asked, we delivered.
The ArQmA team.