ARTOA4-UserManual/Offsets.md

@@ -34,8 +34,28 @@ calculated by ARTOA "Calculate offsets" How????
 
 **column Applied SoundSpeed (editable !)**
 
-value set by either copying "Measured", "Emprical" or " Optimum" to "Applied" (see window "Offset controls", lower right) or by manually typing into this field.
+value is set by either copying "Measured", "Emprical" or " Optimum" to "Applied" (see window "Offset controls", lower right) or by manually typing into this field.
 
 **column Emprical Offset (non editable)**
 
 taken from "-empric_offset" in soso file. Gives Empric Offset entered manually by editor of soso file based on experiece. Should be associated with data given in "Offset Start Date".
+
+**column Emprical Drift (non editable)**
+
+taken from "-empric_drift" in soso file. Gives Empric Drift entered manually by editor of soso file based on, e.g., results on the merged inversion of multiple floats.
+
+**column Optimum Total Offset (non editable)**
+
+calculated by ARTOA "Calculate offsets"
+
+**column Optimum Total Drift (non editable)**
+
+calculated by ARTOA "Calculate offsets" by inverting the eqation:
+
+**column Applied Offset (editable !)**
+
+value is set by either copying "Measured", "Emprical" or " Optimum" to "Applied" (see window "Offset controls", lower right) or by manually typing into this field.
+
+**column Applied Drift (editable !)**
+
+value is set by either copying "Measured", "Emprical" or " Optimum" to "Applied" (see window "Offset controls", lower right) or by manually typing into this field.
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