It is recommended that you leave a space between the parameters, to allow for better legibility of long lists and distinguishing between different sections.
To add multiple columns to a section, add {{!}} on a line by itself where you want the column break to be.
For sources with an official "Dramatis personae," use |dramatis personae= and |other characters= instead of |characters=. You may not use |dramatis personae= or |other characters= if you are already using |characters=.
All fields now have canon-legends functionality. For sources that exist in both Legends and canon, use the parameters "l-fieldname" and "c-fieldname" to separate the appearances from the two continuities.