OK.... Ok.... Okay.
Which is the correct one ?
Thank you for your patience.
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Okay is better, and is the only way to write it if you mean the verb "to approve" or the noun meaning "approval" in contexts like "Please reivew this and give me your okay on the changes." or "You need to okay this before it goes to the printer." That also applies to the ajective meaning "accpetable," as in "The movie was okay, but the book was better." In fact, you really shoudl spell it out in most instances.
Ok is really not used.