Does "now it does" mean "now it does exist"? That is, "now it is true that a complete English grammar reference really exists."
The problem is the use of "false" there. "False, now it does!" appears to mean "now it does be false!" Contrary to the result of reasoning above.
Context:
A complete
English grammar reference
does not exist!
True or False?
False, now it does!
Check out The Farlex Grammar Book
Source:
https://idioms.thefreedictionary.com/flip+around