What is the difference between a Square cut squeegee and a ‘D’ aka ‘V’ cut squeegee?

What is the difference between a Square cut squeegee and a ‘D’ aka ‘V’ cut squeegee?

‘D’ Cut Squeegees are used for T-Shirt printing, the tapered edge allows maximum ink deposit onto your garment. Square edge blade allows for lesser deposit of ink and is used widely on higher mesh counts and finer prints.

via Wicked Printing Stuff, your home for screen printing equipment and supplies – FAQs.