HP50g small tips and trick

[Simone Cerica]

This software and this discussion can be very helpful :

• XC49 by John H Meyers
  http://www.hpcalc.org/details/5493
  "XC49 performs hassle-free HP 49G/G+ CAS commands (in RPN mode) so that they don't force you to delete variables, don't fail because of variables which already exist, don't prompt for any mode changes, and don't leave any modes changed after execution."
• Inconsistent Exact to Approximate Mode Change
  https://groups.google.com/forum/#!msg/co...yZBYfBM34J