Changes

'''Note''': this section and subsequent sections are, by necessity, slightly more technical/formal than the earlier parts of this article, though specialist notation and abbreviations have been largely avoided. Make sure that you understand the 'Simple example' above before proceeding further, since references will be made to that example to help explain the technicalities, and variations on that example will be used to illustrate new ideas.  

'''Note''': this section and subsequent sections are, by necessity, slightly more technical/formal than the earlier parts of this article, though specialist notation and abbreviations have been largely avoided. Make sure that you understand the 'Simple example' above before proceeding further, since references will be made to that example to help explain the technicalities, and variations on that example will be used to illustrate new ideas.  

A formal generative grammar has four components (see slide 19 of this lecture

A formal generative grammar has four components (as described in slide 19 of this lecture

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<ref>{{cite web

| url = http://adammikeal.org/courses/compute/Chomsky%20Presentation.pdf

| url = http://adammikeal.org/courses/compute/Chomsky%20Presentation.pdf