Maybe this is a question for the Aircraft Profiles topics, but here goes:

How do I include a permanent RMK/ in item 18 of the flight plan inputs, instead of having to type it separately every time in the "Extra Information" box?

For safety I want to put in my ADL Connect satellite tracking address, for every flight.  The Aircraft Profiles allows additional COM or NAV equipment but these fields may not appear in Item 18 and anyway are apparently limited to 20 characters.