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camlspotter committed 936706e

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             Equivalent to 
                 fun s -> Printf.sprintf "...%s...%02d..." s var
 
+        $"...\$..."
+            To have `$`, you must escape it.
+
 ### Perl like sub-shell call ``$`...`` or ``<:qx<...>>`` ###
 
 #### SYNTAX
 by a function named ``command``. You need to provide this ``command`` function
 in the context. For example, you can use ``Spotlib.Spot.Unix.shell_command``.
 
+In P4 quotes, if you want to use shell appending redirect `>>`, you must escape it:
+
+     <:qx<cat file.txt >\> dest.txt>> 
+
 ### Perl like hashtbl access ``tbl${key}`` ###
 
 Macros provide Perl like syntax for ``Hashtbl.xxx`` functions.