[Orgmode] [PATCH] Info: clarify all allowed values of PROPERTY in COLUMN definition

[Gregory J. Grubbs]

Add cross reference to Special properties/Column atrributes node to
clarify what may be used in the PROPERTY definition

--8<---------------cut here---------------start------------->8---
index d2b4d3c..3c6fe1a 100644
--- a/doc/org.texi
+++ b/doc/org.texi
@@ -4589,6 +4589,7 @@ optional.  The individual parts have the following 
meaning:
 @var{width}           @r{An integer specifying the width of the column in 
characters.}
                @r{If omitted, the width will be determined automatically.}
 @var{property}        @r{The property that should be edited in this column.}
+                @r{Special properties may be used here (@pxref{Special 
properties})}
 (title)         @r{The header text for the column. If omitted, the}
                @r{property name is used.}
 @address@hidden@}  @r{The summary type.  If specified, the column values for}
--8<---------------cut here---------------end--------------->8---