Voln dostupn vvojov prosted pro idla Vernier s vyuitm Blockly:
www.vernier.cz/blockly
BSD 3-bodov licence (https://cs.wikipedia.org/wiki/BSD_licence)
Copyright  2021, Edufor s. r. o.

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Voln dostupn knihovny Vernier: 
BSD 3-Clause License (https://en.wikipedia.org/wiki/BSD_licenses)
Copyright (c) 2021, Vernier Software & Technology. All rights reserved.

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Voln dostupn knihovny Blockly:
Apache 2.0 (http://www.apache.org/licenses)