This fiel tell us if this polyline is a closed polyline (=polygon)
Namespace:
GLSV
Assembly:
GLSV (in GLSV.dll) Version: 1.2009.6.26 (1.2009.06.26)
Namespace:
GLSV
Assembly:
GLSV (in GLSV.dll) Version: 1.2009.6.26 (1.2009.06.26)