Where is "any key" on the keyboard?

Sometimes during the installation of software or hardware configuration, the computer user is asked to "press any key to continue". Incorrect interpretation of this instruction has become a great joke between a witty computer. Techíci like to introduce users who search the keyboard "any key". There are several keys on the keyboard that no one seems to use as "Scroll Lock", so the presence of "any key" seems at least remotely credible. The user searches and checks each key twice, but when they appear with an empty hand, they call technical support and ask, "Where is any key?" While such a call has undoubtedly occurred, hopefully it is not very common!