Markers panel
With a path, a line, a polyline or a polygon selected

A route with arrows and dots, and the Markers panel with Start, Middle and End

When it appears

With a path, a line, a polyline or a polygon selected. The markers at the vertices.

Fields

FieldWhat it does
Startdrop zone for a marker on the first vertex; × removes it
Middlefor every vertex that is not an end
Endfor the last vertex