Okay, so I've been lurking on 4chan for a few years now, but I still don't know how to make these comments:

i̴̩̼̖͎͑ͧ̊ͬͪ̂̎̆͂ͧ̑ͧ̑̅ͣ̊͊g̵̶̸̷̘̝̗͈̭͔̝͈̱̳̮̜̅ͮ̋̒̇̋͠e̓̄̋̓ͨ͗̇̊̉ͪ̊̄̎̉̀҉̭̯̳̜͕̦̲̖̱̮̹͙̩̥̼͙̭̟͜ͅ

I get that these are some random characters compressed in one space, but I don't know to do it. Could someone explain what this is called, or how to do it?

>inb4 newfag