By
    ----------------------
    Basic keyword
     
     
    Use: Changes the effect of certain graphics statements. Indicates the
    co-ordinates given in the statement are relative rather than absolute.
     
    Example:
    Draw By x%*10, y%=5
    Move By 4*x%,4*y%
    Point By 100,0
    Fill By x%,y%
     
    For further info about Graphics in WimpBasic click here.
     
    Other keywords in the Graphics category.