GlyphData.xml > "Script"-Attribute > What is it for?

What is the “script” attribute in the glyphData.xml used for?
Is it for GlyphsApp internal use only? And what effect does it have?
Does it effect the finally generated fonts?

It is used mostly for two things.

  • sorting/grouping/filtering of glyphs in Font view.
  • Feature code generation, handling of writing direction

The info itself is not stored in the final font.

Thank you very much!
(Would you like to add this info to the tutorial? )