the letters Of ATC are too big in screen?

is there a way to change the size not the shape of the square"or rectangle" of the ATC screenplay I mean the size of the letters? .I wish i could make them very little and set it where doesn't bugging me
Flight Simulator and other chat
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https://forums.simviation.com/phpBB3/viewtopic.php?f=20&t=49215