Some resources to help you getting started with STM32 programming.
A nipper or tile nipper (like a pair of scissors or pliers) is a tool used to 'nip' or remove small amounts of a hard material, such as pieces of a tile which needs to be fitted around an odd or irregular shape.
Note: Images are for representational purpose only, and the manufacturer, layout, color, packaging, etc. keeps on changing. But it will still works as a wire nipper.