Does it make any difference if I change lang in html tag ?

[paulj]

Hi guys, A simple question, does it make any effects to my document if I change the value of lang attribute ? Or Can I make any considerable effects in my document by it? regards, art.

[vinyl-junkie]

Short answer: Yes, it does make a difference.

For a more detailed explanation, you might want to read what w3.org says about the lang attribute here.