ColorRepl() - replaces all attributes of a screen area
 Replaces particular screen attributes
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 Syntax

     ColorRepl([<cNewAttr | nNewAttr>], [<cOldAttr | nOldAttr>]) --> cNull

 Arguments

     <cNewAttr | nNewAttr> is the new attribute. The default is "W/N" or 7.

     <cOldAttr | nOldAttr> is the old attribute to replace. The default
     is all existing attributes.

 Returns

     ColorRepl() always returns a null string, or "".

 Description

     This function is ideal for playing about with screens. This function
     allows you to change the colours of screen areas.

 Note

     ■  If you do not specify a set of <cNewAttr | nNewAttr> then the default
        CLEARA colour string is used.

     ■  This function does not alter the cursor position.

 Examples

     ■  Exchange the colour 7 (white on black) for 0 (black on black=
        invisible):

        ColorRepl(0, 7)

     ■  Replace all colours for 116 (red on white):

        ColorRepl(116)

     ■  Mixed formats are also possible:

        ColorRepl("0/7", 7)

 Files:  Library is MRWINDOW.LIB.