Ketav Stam (Hebrew: כתב סת"ם) is the specific Jewish traditional writing with which Sifrei Torah, Tefillin, Mezzuzot, and the Five Megillot are written.
In addition, many of the specific details of the Biblical mitzvot are only derived via rabbinical application of the Oral Torah (Mishna/Gemarah); for example, the reading of the Shema (Deuteronomy 6:4-7), the binding of the tefillin and the fixing of the mezuzah (Deuteronomy 6:8-9), and the saying of Grace After Meals (Deuteronomy 8:10).
Many terms used in the Torah are left undefined, such as the word totafot, usually translated as "frontlets," which is used three times in the Pentateuch (in Exodus 13:9 and Deuteronomy 6:8 and 11:18) but only identified with tefillin in the Mishnah (see Menachot 3:7).