@steinhoj .... now i see that i made mistake ...
What i wrote last is "quota" and this is like limit or requirement .. But Qoute is like "cite"
The first question was ...what is this? And the answer: quote is for example when you are using in your work (for example blog) the sentence from other authors.... you must use " " and write source under line ... this ist quote
Quote also means percent, proportion I think. Real world situation: Think of a student who didn't do his homework about percent, proportion and hopes that problems about them will not appear in exam. He opens his test in the examination and says "Quote!".