Functional Forth For The BBC Computer is not a teach-yourself Forth book. Instead, it analyses how the language works and functions. Forth is a compiled language like Pascal, which means its speed of execution should be faster than the speed of a language such as Basic.

The ten chapters explain how the system works and include topics such as Forth words and pointers, the all-important stack, vectors, control structures, logical functions, sound effects, graphics and the operating system.

They contain many examples and definitions of terms. Also provided are charts and diagrams.

The author obviously knows his subject but the style of presentation is not as good as it could have been for a text of this nature.

The author claims that the reader should understand his computer through the use of Forth. But I reckon that any reader who understands this book without too much effort will be doing fine.