|Set Autosize Font…|: calls a dialog to set the autosize font characteristics for all lines.
|Autosize|: in addition to arrows, the length of the line is indicated automatically, with fractional parts displayed as a |decimal|. The units and scaling are determined by the |Custom Rulers| dialog- see |Layout| menu.
|Double Arrows|: arrows are placed at both the start and end of all selected |lines| and new |lines|.
|Arrows At End|: an arrow is added only at the end of the selected |lines| and new |lines|.
|Arrows At Start|: an arrow is added only at the start of the selected |lines| and new |lines|.