W-shaped block

[DWx]

Differing methodologies are what make up the different styles. One does it this way, while another does it that way. Is your style correct/wrong? Is my style correct/wrong? Is someone else's style correct/wrong? Nope! Methodologies are why I'm this and you're that and whomever is this and that! Who's the most effective? We'll only know this when we've meet on the battlefield!

But it is interesting to see what variations are out there and the reasoning behind them. Also you never know when someone will come up with a reason or a method which makes more sense than the ones I'm currently using.