A code page is a page that contains a list of character codes and their corresponding glyphs (characters). For example, with code page 437 (uses with most English versions of Windows) the character code number 160 is an "a" with an accent (á). In hexadecimal, this character would be code number A0. For computers that are using code page 437 holding down the Alt on the keyboard and then entering "160" on the numeric keypad.
How to determine what code page my computer is using
MS-DOS and Microsoft Windows command line users can use the chcp command to determine what code page the computer is currently using. The chcp command can also be used to change the code page.