Jacob's thigh was disabled by the Angel, to show the patriarch that his prevalence was through his faith and prayer, not through force, Genesis 32:25-31. Smiting the thigh was a gesture of self-condemnation and grief, Jeremiah 31:19 Ezekiel 21:12.
In general, a datum is a base elevation used as a reference from which to reckon heights or depths. A tidal datum is a standard elevation defined by a certain phase of the tide.
1 Rule of non-override: No datum feature (datum feature simulator, datum) shall influence degrees of freedom already constrained by higher precedence datum features. 2  The âcan-may-mustâ rule: If a datum feature (datum feature simulator, datum) can constrain a degree of freedom, and it may, then it must.