A peek through the railings

All the busses that I used today were on diverted routes due to a certain rather blue-looking march that was taking place today. 

I learned another piece of nonsense today from the internet. 
It's years and years that I've had the plug with a magnetic attachment to charge my MacBook. Never did I realise that on the plug there are two pull-out arms to wind the lead around and the little clip to then hold it in place. I've always noticed the clip but never knew about the hidden arms. Nearly as good as the knowledge of the arrow on the petrol pump symbol.