I wanted to edit or delete my original post above in Japanese, but I don't see any button or icon that I can click to do so.  I also can't find any option to contact an administrator or moderator, so I've decided to reply to my own post.

After posting my original post, I found that the procedure described above changes the font in the Translation result window.

Being able to do that is nice, but what I really wish to do is to change the font in the editor window which shows the source and the target side by side.

Just in case I am not using the proper terms for the respective sections of the editor screen, I'm referring to the section denoted by "7" in the graphic on the following page:

 https://docs.rws.com/ja-JP/sdl-trados-studio-783547/topic-undefined-340414

Can somebody please tell me how to change the font (for example, to Arial) in the target language segments on the editor screen?

Thank you!

Problem solved!  

From File, Options, then Editor, I selected "display all tags without displaying format" for Format display style.

Administrator or moderator, please label this post as "solved".

Thank you!

Problem solved!  

From File, Options, then Editor, I selected "display all tags without displaying format" for Format display style.

Administrator or moderator, please label this post as "solved".

Thank you!