done with manila folders rather than hanging files. For home offices or lighter use applications, vertical files are manufactured in versions. These typically have two-member suspensions and the drawers do not fully extend. Lateral file Lateral files are typically deep and manufactured in widths and 2-, 3-, 4-, and 5-drawer versions. The , two-drawer version is popular for use inside cubicle workstations, as it is engineered to fit under or alongside the cubicle work surfaces. Logic for the use of 3-, 4-, and 5-drawer files is similar to that of vertical files. Unlike vertical files, most lateral files allow for side-to-side or front-to-back filing. For letter-size files arranged front-to-back, the files are the most effective, as the maximum amount of filing per cabinet is enabled. A file, with letter-width filing front-to-back has no more capacity than a corresponding file, as the additional space would be wasted. Some users prefer side-to-side filing, as they can search index tabs from a seated position. All-width lateral files can accommodate this configuration, though the capacity of the file is somewhat diminished. An advantage for lateral files is that access and view of all files can be easier than with a vertical file because the drawers do not extend as far. In most instances, the top "5th drawer" of a five-drawer lateral file is a flipper door with pull-out shelf, as most people would not be able to access the top of a drawer at this height. Shelf file A shelf file is a cabinet designed to accommodate folders with tabs on the side rather than on the top. The cabinet has no drawers, only shelves. Some shelf files come with doors that recede into the cabinet. These cabinets are typically or deep, for letter or legal size folders respectively. Like lateral files, they are made in , , , and widths but are usually only installed in 5-high and 6-high applications. Side tabbed files often use color codes that represent an alpha-numeric filing system. This methodology is a way to ensure files which are frequently retrieved and returned are easy to find and do not get lost. Finding a file is easy as to color-coded tabs easily lead the human eye to the appropriate location in the filing system. Similarly, a misfiled folder is obvious as an out-of-sequence color code is obvious to the user. Businesses such as doctors, dentists, veterinarians, police, and government