Ok, but where is the limit drawn? For example, I remember reading somewhere that the Russians or Copts have a tradition that details what the Theotokos said when she saw Luke the Evangelist painting the first icon. Big T or little t?
In the Orthodox Church there are those things which belong to “Holy Tradition” and those things which are simply “traditions” (or, perhaps, better called “customs”). In essential matters—doctrine, sacraments, worship, etc.—there are no differences.
In minor things—the style of vestments, the exact order of services, customs associated with various feast days—there is a wide variety of customs which may be found, as developed in various times and various places based on a wide variety of circumstances. Furthermore, these customs are not, nor were they ever intended to be, that which brings about unity within the Church.http://oca.org/questions/dailylife/holy-tradition-vs.-customs
Another source of Orthodox doctrine is Holy Tradition. This includes the oral tradition, i.e., teachings that have been passed down from one Christian generation to the other since the time of Christ, which may or may not be included in the Bible. It is, if you will, the living consciousness of the Church; its continuity with the Church of the Apostles. For example, the Orthodox practice and believe many things that may not be specifically written in the Bible but may have biblical meanings and/or symbolic Christian truths. For example, doing the sign of the cross, triple immersion in baptism, facing toward the east in prayer, the ever-virginity and all holiness of the Virgin Mary, the various rites, worship services and devotional practices of the Orthodox that have been passed down from one generation to another, etc. Thus, the Orthodox Church bases its doctrine on the Bible, Holy Tradition, writings of the Church Fathers (early successors of the Apostles), and on the various ecclesiastical councils which were held throughout the history of the Church. www.orthodoxphotos.com
Holy Tradition is the deposit of faith given by Jesus Christ to the Apostles and passed on in the Church from one generation to the next without addition, alteration or subtraction. Vladimir Lossky has famously described the Tradition as "the life of the Holy Spirit in the Church." It is dynamic in application, yet unchanging in dogma. It is growing in expression, yet ever the same in essence.
Unlike many conceptions of tradition in popular understanding, the Orthodox Church does not regard Holy Tradition as something which grows and expands over time, forming a collection of practices and doctrines which accrue, gradually becoming something more developed and eventually unrecognizable to the first Christians. Rather, Holy Tradition is that same faith which Christ taught to the Apostles and which they gave to their disciples, preserved in the whole Church and especially in its leadership through Apostolic Succession. http://orthodoxwiki.org/Holy_Tradition