Weight mode

Weight mode can alter how weights are used.

for example

i1=inidcator1

i2=inidcator2

result=i1*weight1{*+/}i2*weight2

or

result=i1^weight1{*+/}i2^weight2

Note also if power "^" is used, x ^y, if y <1 then it becomes square root

Sign log is not recommend, but users are welcome to experiment.