(28/48/50) Lambert W Function

[Gil]

In your post 18,
Hi, Albert.

You write 70 Y=(K=1)+K*A/4
80 REPEAT @ H=Y-(Y+A)/(LOG(Y)+1) @ Y=Y-H @ UNTIL Y=Y+H*.0001

What is the meaning of "(K=1)" in line 70 "
a) Y=k+k*abs(a)/4 in any case
b) or Y=k*abs(a)/4; Y=Y+(1, if k=1; 0, else)
c) or Y=?