XS_DEFAULT_FONT_SIZE
Category in Advanced options dialog: Model views
Use this advanced option to set the default font size when
modeling. The default value is 12.
This advanced option is user specific and the setting is saved in options.bin under the user folder, for example, in C:\Users\<user>\AppData\Local\Trimble\Tekla Structures\<version>\UserSettings. Restart Tekla Structures to activate the new value.