An Along arrow runs horizontally within its row. When you add or edit an Along arrow, you set the following options:
Arrow and Guidelines Placement
There are 7 unique locations where an arrow can be placed - a combination of 3 alignments within 3 regions - inside the current row. There are no 9 positions, because Top/Entire row and Top/Above waveform are identical, and so are Bottom/Entire row and Bottom/Waveform.
Select whether to Show a label, its font and Background color (if not Transparent).
A label can be aligned along 5 positions relative to an arrow: Above, center, below, left and right, with further pixel-level adjustments with Offset.
Offset sign follows the directions of the X/Y axis (i.e. positive horizontal offset is to the right, and positive vertical offset is downward).
Label text can include superscript and subscript portions, e.g.:
a""n"" and t..RC..
Superscript text is surrounded by a pair of quotation marks, and subscript text is surrounded by a pair of dots.