Is there a way that the user can interactively use variables constants from the command line?
What I would like: the way that variable speedcrunch is handled, in that you could type:
thickness=.125
When specifying a line length, you could type thickness+5.5.
ans, would be a handy thing, that returns the last answer.
You could also use to store things like the weight of steel for volume calculations, such as:
ans*steel
If you get board, check out Speedcrunch. What makes it useful, is that all the user variables are saved/loaded when the program is closed, and you can get a list of variables.
I am sorry that their website is so useless, but…
http://www.speedcrunch.org/