General form:

KXXXXXXX LYYYYYYY LZZZZZZZ value

Examples:

K43 LAA LBB 0.999
KXFRMR L1 L2 0.87

LYYYYYYY and LZZZZZZZ are the names of the two coupled inductors, and value is the coefficient of coupling, K, which must be greater than 0 and less than or equal to 1. Using the `dot' convention, place a `dot' on the first node of each inductor.