[TimMeade]

i had a room mate in the early 90's who was a forth programmer. At the time they wrote the code that did the airport displays. It was all forth. I wrote c back then and never really grasped it. Always seemed a little like a weird assembler.

[Someone]

It’s a meta-assembler. You can see every word you define as a new instruction you define. For example, if you want an instruction that multiplies by 17, you do

  : 17* 17 * ;