Panasonic GTWIN Reference Manual page 165

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3. Click the field "Character String" to enter text for language 0
4. Set the font type, size, style, and color
You can only make these settings for language 0. The settings are used for all
other languages you may set up. The alignment options only work for texts that
are longer than one line and for parts with texts in multiple languages when one
language is much longer than the others.
5. Under "Language No.", select "Language1"
6. Click "Eng" under "Character String"
This displays a pop-up menu with the character sets available. The current setting
"Eng" is for Western languages like English, French, German, Spanish, etc.
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GTWIN Reference Manual