Learning to input programs on HP-41

[Jeff_Birt]

I am playing with the DM41X learning how to enter programs. I thought I would try entering one of the programs from the PPC ROM and am finding it frustrating to try and convert from printer listing symbols to keyboard entry. I have attached the program I am trying to enter.

After much effort I figured out how to enter line 10, the R^. Lines 6,9,13,15 have me stumped. I know it is a conditional test but what is the character after the != ? How is this entered on the keyboard?

Thanks!