In the TTree Fill documentation, there is the following statement:
However, this is inconsistent with the autosave documentation:
root.cern.ch/root/html/TTree.ht … etAutoSave
It should say fAutoSave(-300000000, ie 300 Mbytes) and specify that is for entries if positive, for bytes if negative. See:
And in the TTree.h line 112 and 113 are also not correct. And for lines 496 and 497, the default value has a changed sign, I do not know if this is on purpose.
On the contrary, the autoflush documentation is quite well described and coherent:
root.cern.ch/root/html/TTree.ht … tAutoFlush
See related ticket, I think is quite important to correct the documentation for avoiding confusion.