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Achievement images sourced from https://thenounproject.com/.
Theme assets are covered by the paid MediaLoot license from Jon's subscription. He has used them to create this theme for Microsoft ("the client" below).
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ModernAntiqua-Regular.ttf: Copyright (c) 2011, wmk69, (email@example.com), with Reserved Font Names 'ModernAntiqua' and 'Modern Antiqua'. This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is available with a FAQ at: http://scripts.sil.org/OFL