L.4.8.5.4 Head/Tail End Properties

Head/Tail End properties specify whether there are any special attachments to the head or the tail of a line. All parameters are specified in attributes: a type, a w (width of line end to width of line), and a len (length of the end relative to the line width). By default, no head/tail end properties are applied. The type can be one of: none, triangle, stealth, diamond, oval, arrow. w and len can be one of sm, med and lg corresponding to small, medium, and large respectively.

<a:ln w="25400" cap="rnd" cmpd="sng" algn="ctr">
  <a:solidFill>
    <a:srgbClr val="4F81BD"/>
  </a:solidFill>
  <a:prstDash val="solid"/>
  <a:tailEnd type="arrow" w="lg" len="lg"/>
</a:ln>