Ruby with Netbeans question!

[Steve]

Hi all
Hope I`m ok posting a Netbeans query here?. I`m trying to learn Ruby
using the Netbeans IDE. It seems a pretty slick application but I`m
wondering if its possible to run a prog without creating a `new
project` each time?. I just want to be able to type in a few lines of
code and run it but it keeps running the `main project` which might be
an earlier prog I have written??. I`m sure the solution is staring me
in the face but would be grateful for any tips folk could provide.
Cheers
Steve