How would a simple program look like, that, when run, writes the message Hello World to the tangle?
2 Answers
Here are some 'workshops' covering several hello world examples, including sending a simple non value transaction:
Javascript: https://github.com/iota-community/javascript-iota-workshop
Python: https://github.com/iota-community/python-iota-workshop
You can check this link about sending "Hello World" to Tangle: https://docs.iota.org/docs/client-libraries/0.1/how-to-guides/js/send-your-first-bundle