HP 50G help

[Claudio L.]

(08-05-2016 02:44 PM)Hlib Wrote:  Can anybody explain me distinctions in use of system and user flags? I would like to get an example in the style like "1 minmarv".

System flags are a small permanent storage area for system settings. These settings control various behaviors of the calculator. The MODE / FLAGS UI is usually enough for you to know which flag controls what. The number on the left column of the list is the flag number to use with the commands SF/CF. (flags can only be set or clear, internally they are just one bit) System flags are negative, for example to turn Complex Mode ON you do:
-103 SF
and similarly -103 CF turns it off. In the MODE / FLAGS list you'll see 103 listed as complex mode.
User flags are exactly the same thing, except they are not used by the system, they are available for the user programs or libraries to use. Also, they are numbered using the positive numbers.
Your programs can use them more or less arbitrarily, bearing in mind they are "shared" by all programs/libraries so perhaps some of the libraries you install from hpcalc.org might be already using some of those flags to remember some settings.

Let's say you are writing a physics program. You could use a user flag for example to "remember" if the user prefers to use SI units or imperial units.