SR-52 conditional trick (absent from the 58/59

[pauln]

If I remember correctly, every single TI-59 instruction that has a numeric operand (Fix d, RCL dd, GTO ddd, ...) has an indirect version. This means that you can write instructions such as:

"INV Ifflg Ind 01 Ind 23"

Even if some of these instructions are very rarely used, I find this consistency quite admirable, as one doesn't need to guess whether such or such instruction has an indirect version. It does.