Alain wrote:
> The source file is only opened and closed when you call it from another 
> file.
> Also, if a macro from an include file calls a macro from the main file 
> or another include from which it was called, then NO file gets to be 
> open/read/closed.
> 
> Call a macro from the SAME file = no additional file transaction.
> Call a macro from a file upper in the calling list = still no additional 
> file transaction.
> Example 1: A macro from an include file use a macro from the main file.
> Example 2: A macro from an include file, included by another include 
> file, that use a macro from the preceding include (the one that caused 
> it's inclusion).
> 
> 
> Alain

Thanks, didn't know about the hierarchy part for not opening files 
higher in the chain.

One further question:
The main file includes IncludeA and IncludeB. IncludeB has a macro which 
uses a macro from within IncludeA.

//-----main.pov
#include "A.inc"
#include "B.inc"

MacroB(param)
//-----end main.pov

//-----A.inc
#macro MacroA(param) //stuff
#end
//-----end A.inc

//-----B.inc
#macro MacroB(param)
   //stuff
   MacroA(param)
#end
//-----end B.inc

What is the file I/O done in this case?

Chris

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