I really need to enlarge the font size of the Mission Planner because I am an old boy and my eyes are getting weak day after day. It is very difficult for me to read Mission Planner’s full parameter list.
While I don’t know an easy way to impact just Mission Planner, if you’re using Windows, you can select a zoomed scale for any monitor connected. Right click on the Desktop and select Display settings. If you have multiple monitors, click on the one in use for Mission Planner. Scroll down in that window and choose a larger scale setting: