### Clue: Prerequisite to quick fix as details hammered out (5,4)
### Answer: LEAST SAID 
 ### Explanation: Definition: Prerequisite to quick fix
 **Anagram of**(hammered out) AS DETAILS.
Defn: Reference to the phrase "least said, soonest amended", ie. before one can mend;fix;forget a bad situation in the quickest time, one needs to say as little about it as possible.