# FlashBASIC

FlashBASIC is a high-level programming language that is an
extension of the Dartmouth BASIC (Beginners All-purpose Symbolic
Instruction Code) language. It is the principal programming
language bundled with the D3 system and was designed for the
implementation of application requirements not handled by standard
D3 functionality.

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Source: https://d3codex.com/definitions/flashbasic/ - part of the D3Codex reference.