MkWin


Purpose   Creates a text window on the screen and saves the screen contents
          that have been overlayed.

Decln.    MkWin(X1,Y1,X2,Y2,F,B,BoxType:byte);

Remarks   X1, Y1 are the top left coordinates of the window.
          X2, Y2 are the bottom right coordinates of the window.
          F, B are the foreground and background display colors.
          BoxType is the box code. The normal box codes are:
               0    Box
               1    Single line
               2    Double Line
               3    Single top/bottom and double sides
               4    Double top/bottom and double sides
               5    Same as code 0 plus a box shadow
               6    Same as code 1 plus a box shadow
               7    Same as code 2 plus a box shadow
               8    Same as code 3 plus a box shadow
               9    Same as code 4 plus a box shadow
          If any other code (i.e. 10..255) is used, the box is drawn using
          the ASCII character represented by the number.

Example

BEGIN
    MKWIN(1,1,40,7,WHITE,BLUE,4);
END;

A white on blue window is displayed in the top left area of the display.