## Environment

GETENV() | Obtains system environmental settings.
SET() | Changes or evaluated enviromental settings
SETMODE() | Change the video mode to a specified number of rows and columns
SETTYPEAHEAD() | Sets the typeahead buffer to given size.
VERSION() | Returns the HARBOUR Version or the Harbour/Compiler Version.
__SETCENTURY() | Set the Current Century
__SetFunction() | Assign a character string to a function key