Direct mail is a broad term that includes the following types of mailed promotions: Institutional direct mail serves to promote the name of the publishing house with no reasonable expectation of sales revenues.
touch (Unix) touch is a standard Unix command-line interface program which is used to update the access date and / or modification date of a file or directory. In its default usage, it is the equivalent of creating or opening a file and saving it without any change to the file contents.
GNU nano puts a two-line shortcut bar at the bottom of the screen, listing many of the commands available in the current context. For a complete list, Ctrl+G gets the help screen. Unlike Pico, nano uses meta keys to toggle its behavior. For example, Meta+S toggles smooth scrolling mode on and off. Almost all features that can be selected from the command line can be dynamically toggled.