Ans:- Pascal uses extensions to extend the features used in the language and to overall implementation of the code.
The implementation is standardized to many processors and implementations when it is possible.
Program that is coded with the language doesn’t use much extension due to the fact that it doesn’t require high performances.
Extensions make the program more clean and portable to use by providing the interfaces to be used in programs. Library construction has become easy to use due the features of advanced interface and the portability that is being increased.