25C/29C Conditionals

[rprosperi]

Also, recall the 25 was released almost a year before the 67 and 18 months before the 29C, and during this time HP was very active refining both internal machine code and the user programming languages, so it's reasonable to conclude the '29C style' conditionals were deemed improvements, and more likely to be useful more often than the earlier style. Not an exact reply, as program needs vary, but overall those guys have a pretty good track record for making good choices when trying to improve things.