Add a 'Reverse' action to the compass heading dive menu.
This allows the compass heading to be reversed for the return leg of the
dive - as a bonus the reversal will be logged, establishing at which
point in the log the dive was turned (mikeller)
3 The free and Open [STM32 IDE](http://www.openstm32.org/System%2BWorkbench%2Bfor%2BSTM32) is an integrated development environment based on _Eclipse_ that will allows you to compile and link code for the OSTC4 dive computer.
4 You will then be able to generate `.bin` firmware files to upload to your computer using your favourite tools, eg. [OSTC Companion](https://ostc-planner.net/companion).
7 2. Once registered and logged in, you can go to _Documentation_ and _Installation Manual_. Follow the instructions to install the IDE (available for Windows 7, MacOS and Linux).