late 15c., in chess, "to attack the king; to put (the opponent's king) in check;" earlier (late 14c.), "to stop, arrest; block, barricade;" see check (n.).
A player in chess limits his opponent's ability to move when he places his opponent's king in check. All the other senses seem to have developed from the chess sense: "To arrest, stop;" then "to hold in restraint" (1620s); and finally "to hold up or control" (an assertion, a person, etc.) by comparison with some authority or record, 1690s.
Hence, to check off (1839); to check up (1889); to check in or out (in a hotel, of a library book, etc., by 1918). To check out (something) "to look at, investigate" is from 1959. Related: Checked ; checking .
The Property element defines the Id for the results of the file search. This Id is used later in the WiX project, for example in conditions. The DirectorySearch element is used to build the directory hierarchy to search for the file. In this case it is given a unique Id, and the path is set to the Windows Installer defined SystemFolder property which points to the user's Windows\System32 directory. The FileSearch element specifies the name of the file to look for in the parent DirectorySearch folder. The MinVersion attribute specifies the minimum version of the file to find.