TC's file-view displays the files along with icons. Basically these icons indicate a file-type. Version Management/Control Systems (CVS, Perforce, ClearCase) often modify the icons, in order to display an additional file-state: "checked-in", "checked-out", "up-to-date" etc. (they also add context-menu entries such as "check out", "get latest version"). Windows' Explorer (and some other software) displays the modified icons. TC's file-view could display the modified icons (the context-menu already accounts for the additional entries).