I am open to advice on this. Consistent appearance should be generated using a COGS style sheet using CSS , and there need to be guidelines and a template for authors who wish to write static web pages. It is important to take account of the requirements of text-only users. This does not need to detract from the appearance of the pages when graphics are enabled.
Various tools exist for authoring and validating pages.
It will be sensible to promote one of each of these for COGS use. Again I am open to comments here. Many pages, however, may best be generated dynamically - that is, on demand by a program that interrogates a database. Examples within COGS are CAS and the Library database, which use PHP3 for database queries and page generation. This has proved to be an extremely powerful approach and I propose that its use should be extended considerably.