You take whatever form of art you want to do, be it a story, idea, character, landscape, architecture, music, or general design, and you start mapping out all of the functions and schematics and mechanics and things on the site, something like a blueprint via written text for you to jot down all of your ideas, flesh them out fully and test how sound it all is as it all comes together before your eyes. It functions as an organization tool and a test simulator for all conceptual forms of art.

So, for a character or theme you want to develop, you can get a general concept and then test it out in the world through roleplaying the character, or of the atmosphere, or as a scriptwriter, or as a narrator, or even as a journalist, creating whatever art form you wish, be it the story for a book, the script for a movie or play, the schematics of a building or general elemental concepts such as nature or society that you can utilize all on your own in a controlled environment of your selection and eventually publish in the process. Whatever you don't like, you iron out along the way as well as monitor your own progress through your design process, and each step, including how well it works or does not work with other things you are doing at the time.

Also, you can use the general scenery or ask for different landscapes, have your character create a new landscape, or whatever you need for your own personal stories or development. Since, I am aware that there are some people that do only Architecture or Scenery, they can work on that by describing the scenery or landscape or something, (ex. the description of a building being 30-feet high by 30-feet wide, brown, made of brick, painted brown, etc.) and then, when they have a firmly established concept, draw it up as they wish after planning it out and make any changes to the conceptual design along the way.

This concept can generally be applied to everything anyone wishes to do, and also serves as a 'script' and 'notation' device for all elements of art as they are conceptualized before they are actually drawn, or to help flesh out the further designs.