+ Vertex </B></span>being the first point of the created <span style="font-weight: bold;"><B>Edge. \r
+ </B></span>For a group of edges, <span style="font-weight: bold;"><B>Source</B></span> \r
+ and <span style="font-weight: bold;"><B>Target</B></span> vertices should be \r
+ shared by only one edge of the group. If <span style="font-weight: bold;"><B>Source</B></span> \r
+ and <span style="font-weight: bold;"><B>Target</B></span> vectors are specified, \r
+ the elements of the group must be adjacent.</p>\r