WOpen() - Opens a new window
 Opens a new window
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 Syntax

     WOpen( <nTop>, <nLeft>, <nBottom>, <nRight> [, <lDelete> ] ) --> nWindow

 Arguments

     <nTop> the top row. The value can be between 0 and MAXROW().

     <nLeft> the leftmost column. The value can be between 0 and
     MaxCol().

     <nBottom> the bottom row. The value can be between 0 and MaxRow().

     <nRight> the rightmost column. The value can be between 0 and
     MaxCol().

     <lDelete>  a logical value that defines whether the area inside the
     window is cleared. .T. will clear the window, .F. will not. If omitted
     this parameter will default to .F.


 Returns

     WOpen() returns a numeric value representing the window handle if
     successful, otherwise WOpen() returns a -1.

 Description

     WOpen() may be used to create/open/display new windows at will. WOpen()
     returns the window number if successful. If unsuccessful, WOpen() will
     return -1 - this could happen if invalid coordinates were passed to
     WOpen().


 Files:  Library is MRWINDOW.LIB.