NBASIC is available in two versions, shareware and standard.  The shareware version is free and does not include some of the features found in the standard version such as graphics, printing, advanced editing, debugging, and configuration options.  If you have the shareware version of NBASIC see Ordering to purchase the standard version.

All programs written with the shareware version of NBASIC will run on the standard version.  Programs written with the standard version of NBASIC will run on the shareware version if statements and functions found only in the standard version are not used.