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Avoid unnecessary content model depth. I am not aware of any Alfresco Content ModelingCommandments that say, “Thou shall not exceed X levels of depth in thine content model lestthou suffer the wrath of poor performance” but it seems logical that degradation would occur atsome point. If your model has several levels of depth beyond cm:content, you should at least doa proof-of-concept with a realistic amount of data, software, and hardware to make sure youaren't creating a problem for yourself that might be very difficult to reverse down the road.