A project refers to a method of tying together many different views, tables, layouts, charts and scripts into one cohesive whole. Note: when saving a project, you are not saving the individual shapefiles and tables, but only the condition that they were in while you were working on them. If you move to another computer, you must move not only the project file (*.prj), but any shapefiles (*.shp, *.shx, *.dbf) and tables (*.dbf, *.inf) that you were using. Many students have been frustrated by saving only the project files, then losing the other data and being unable to re-open their work. Project files are usually fairly small (100 K).