> I understand that whenever a macro is called that is not in the main 
> scene file, the .inc must be opened for every call, thus the speed 
> improvement by copying often used macros to the scene file.
> 
> However, how is it handled when a macro calls another macro?
> 
> Example:
> scene.pov has no macros defined, includeA.inc has MacroA defined.
> Scene calls MacroA 100 times, so includeA.inc is opened and closed 100 
> times.
> 
> scene.pov has no macros defined, includeA.inc has MacroA and MacroB 
> defined.
> Scene calls MacroA 100 times, and MacroA then calls MacroB 10 times 
> within itself.
> My question: Is includeA.inc opened 100 times still, or is it then 
> opened 1000 times?

No.
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 whithc it was called, then NO file gets to be 
open/red/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

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