## KK

`KK[i]` is the default setting of `IsolateNames`, which is the head of abbreviations used by `Isolate`. A `KK[i]` returned by `Isolate` is given in `HoldForm` and can be recovered by `ReleaseHold[KK[i]]`.

### See also

[Overview](Extra/FeynCalc.md), [Isolate](Isolate.md), [IsolateNames](IsolateNames.md).

### Examples