By purchasing this electronic product you are provided with a single-user license. You may install and use the product in only one location at a time. You may physically transfer the product from one location to another, in which case you may use the product at the new location instead. If you require the product to be in more than one location or accessible by more than one person, you must download the product (which provides an additional single-user license) from this site for each such use. If you wish to make additional copies of this product for use in a classroom or other group setting, you must purchase additional copies (licenses) from this page. You may make one (1) copy of the product solely for back-up purposes. Photocopying and distributing the product to others is a violation of the copyright.