Docs @ Psychtoolbox Wiki: Screen('TextSize')

Screen('TextSize')

Psychtoolbox › Screen .{mex*,dll} subfunction

Usage

oldTextSize=Screen('TextSize', windowPtr [,textSize]);

Read/Set the text size for the specified window.
You can assign a default font size for new windows via a call to
Screen('Preference', 'DefaultFontSize'). The initial default font size is
operating system dependent.

Docs @ Psychtoolbox Wiki : TextSize

Screen('TextSize')

Psychtoolbox › Screen.{mex*,dll} subfunction

Psychtoolbox › Screen .{mex*,dll} subfunction