Digital is a printing method that transfers digitized text and images from the computer directly to paper or any other substrate via various types of printing devices, most commonly using a laser or LED to affix toner. Ink jet also falls under this definition but now has its own subcategory. Note that this category is focused exclusively on digital printing. Sites about digital creation of printing films or plates do not belong here. Sites placed in this category should deal primarily with the digital printing process. This includes sites of trade associations, companies selling equipment and supplies, and any site providing resources about the process. In contrast, the sites of printing companies that use this process are not listed here; instead, each printing company is listed in a category based on the type of product it produces. Note: This category is currently undergoing revision, as sites related to a specific products or to general commercial printing are being moved to more appropriate categories elsewhere.