Help with an "unknown" APL2 symbol

Quote:

> Help ! While trying to adapt for APL+WIN a function written in APL2, from a

> barely legible faxed sheet, I met that symbol that looks like the capital

> letter "O" or the APL symbol for PI. Actually, the expression is : TxO.iota

> N, where T and N are scalars, and "x" stands for the multiply sign. It

I think you have a fax problem. T{times}{circle}.{iota}Z and

T{times}{nul}.{iota}Z are both invalud expressions in APL2. Note:

{circle} is the large circle (pi when monadic) and {nul} is the small

circle (as used in outer product).

What is the expression supposed to do?

Ted