Procedure WriteStr(Line:String)

    Updates VX and VY       : Yes
    Updates Cursor Position : Yes

    Writes a string to the  (virtual)  screen  at  (VX,VY).   If you wish
    to   display   more   than   one      string   (usually   done   with
    WriteLn(StrA,StrB)), use

    WriteStr(StrA + StrB).

    StrA + StrB should not exceed 255 characters.

    Caution

    Unlike the Turbo Pascal  Write  command,  the  screen will not scroll
    up if you write in the lower right corner of the screen.  The current
    write position is set to the line below the last line of the screen.