Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. True BASIC is a variant of the BASIC programming language descended from Dartmouth BASIC the original BASIC invented by college professors John G. Kemeny and Thomas E. Kurtz.When True BASIC appeared on the market in 1985, initially based on Dartmouth BASIC 7 otherwise known as ANSI BASIC it implemented a number of new features over QBasic, and allowed the user a redefinable 16-color, 640×480 pixel backdrop for program editing. True BASIC introduced new functions for graphics primitives like plot, plot area, flood, etc. It also was the first to provide a method for saving a portion of the screen and blitting it elsewhere, but had no proper buffering implementation.