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* `argv`: a `void*` pointer that is passed as a parameter to the entry point function.
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* `options`: thread options, such ad `Thread::JOINABLE`. By default native threads are not joinable, which means they will never end. The `join()` method allows to wait for a thread to end its execution.
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As a side note consider that, when writing flight software, we usually don't implement threads directly as shown in this page, but we make use of the [Active object](Active-Object) class.
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#### Example: LED Blink
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In this example two threads make two LEDs blink. The first one changes state two times every second while the second one is set "high" only when the on-board user button is pressed (the discovery's blue button).
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