Since the US (us yanks) can't do specifications correctly:
From IEC60950 (A Europian Union specification on safety of power equipment)
— wires connected by soldering are not considered to be adequately fixed unless they
are held in place near to the termination, independently of the soldered connection;
There are two types of fools...
One says this is old, and therefore good..
The other says this is new, and therefore better...