How does Bacula decide which files to include in a Diff/Inc. backup

Hi Guys

I am looking into this issue.
the documentation i have found mentions that the system decides on which 
files to include on a diff or inc backup by looking at the Changed and 
modified fla(ctime, stime) and if Accurate is set to yes, then the whole 
files list from the full backup is sent to the filedaemon on the client 
machine, it does not mention the dirty-bit of windows file system, i 
guess because it does not operat on the file blocks( i am guessing this 
maybe done in the BMR feature included in the Enterprise version)

The problem is that all the info I have found so far is old, i mean 
10-15 yers old, some online documentations is talking about Bacula 3.03. 
I was wondering if there has been any developements on the schemes 
bacula uses for this, is there any newer documentations that anyone has 
the links to?? Or does any devs can shed some light onto how this is 
done on the newer versions??


Regards /Mehrdad

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Mehrdad Ravanbod System administrator