According to Bosak, solving the issue of display can be developed using a procedural approach or with a declarative approach. The procedural method is easy to develop by technical people and quick to process. However, the declarative approach can be more powerful, and is far more user friendly to the general user in the long run. PostScript can be used as an example of a procedural approach, while PDF is declarative. Scripts to display XML are procedural, and style sheets are declarative.
Style sheets are harder to implement by programmers than scripts.
However, they are easier for any user to develop and in the end can provide more powerful display capabilities. Clearly implementing XML style sheet technology will be the next big hurdle for the Web. According to Bosak, we make a big mistake in continuing to believe that style for online presentation is a subset of print. In the near future, when we have display capabilities with DPI equaling what we have in print, it will become clear that just the opposite is true. Print will become a subset of online presentation capabilities.