Add a quick toggle/shortcut to toggle show/hide non-printable characters without going through Settings.
When translating a large project in which the target must match the same whitespace as the source for each segment (soft spaces, hard spaces, tabs, inline linefeeds), there is a frequent need to make whitespace visible to compare both sides, then switch back to normal viewing for readability.
Currently, this can only be done by the sequence "click settings (gear)> Appearance > Non-printable characters displaying > click show > click save", then after comparing both sides, going through a similar sequence to click "hide". Adding shortcut will save time for translation/review.