fddf3d51_S5__7_0__Object_Model_JS__Cell__Property
[Type] FirstBaseline: FirstBaseline.ASCENT_OFFSET FirstBaseline.CAP_HEIGHT FirstBaseline.LEADING_OFFSET FirstBaseline.EMBOX_HEIGHT FirstBaseline.X_HEIGHT FirstBaseline.FIXED_HEIGHT [Access] r/w [Description] The distance between the baseline of the text and the top inset of the cell. [Property] 
firstBaselineOffset
Adobe InDesign CS5 (7.0) Object Model JS: Cell
Property