Polyline library functions
Function Name	Description
PL_3d?	Checks if a polyline is 3D or not
PL_AddPoint	Add a new point on the polyline just before the specified vertex number 'VxNum'
PL_Arced?	Checks if a polyline has atleast one ARC segment
PL_ArcPl2LinearPl	Reconstructs a polyline list by replacing only all arc segments with linear segments of specified distance.
PL_BoundPoly	Creates boundary polygons around lines, polylines and/or Circles
PL_BreakX	Break the polyline at this point
PL_DelPoint	Deletes a point from a POLYLINE
PL_DividedPoints	Returns the points obtained by dividing the given polyline (either in 'entity' form or list form )
PL_DrawLeaders	Draws Leaders along each segment of the polyline, thus showing the direction of flow of the polyline.
PL_DrawLeaders2	Draws Leaders along each segment of the polyline, showing the arrows at the ends of the segments.
PL_facelist	Returns the face definition list from a polyface object
PL_Fitted?	Checks if a polyline is fitted or not
PL_FlipArcedPolyline	Flips (reverses) an arced (2d) polyline using special techniques
PL_Get2dPolyElev	Find the elevation of a 2d polyline
PL_GetBulgeLst	Returns the bulge list of an arced polyline
PL_GetMiddlePoint	Find the middle point of a line, polyline, arc or spline object
PL_GetSlope@Point	Find the slope of the curve object at a given point
PL_GetVxEntl	Returns the complete entity list of a polyline, including the entity list of the vertex entities
PL_GetWidths	Returns a list of all starting and ending widths of segments in polyline
PL_MapMask	Creates an Opaque mask out of polylines and/or Circles by turning them into REGION entities.
PL_MeasuredPoints	Returns the points obtained by measuring the given polyline (either in 'entity' form or list form )
PL_Mesh?	Checks if a polyline object is a 3d mesh object or not
PL_mk_pl	Given a list, draw a POLYLINE or LWPOLYLINE using the entmake function
PL_mk_pl_feed	Given a list, draw a POLYLINE or LWPOLYLINE using co-ordinates feeding to command line
PL_NewPoint	Update a point of the POLYLINE at the specified vertex
PL_Open?	Checks if a polyline is Open or not
PL_plist	Return list of points from an LWPOLYLINE or POLYLINE
PL_PlJoin	oin Polyline or LINE segments in selection set.
PL_plpick	Polyline pick
PL_PolyFace?	Checks if a polyline object is a polyface mesh or not
PL_ReconstructPoly	Reconstructs a polyline list by joining the split up objects resulting from an exploded polyline object
PL_SeekMain	Seek Main entity name from vertex name
PL_Spl2Pl_Int	Convert a SPLINE or ELLISPE object to a normal polyline using the interpolate method
PL_Splined?	Checks if a polyline is splined or not
PL_SplitPoly	Split a polyline into a number of smaller segment polylines based on a list of points falling along it.
PL_SplPl2Pl	Convert a splined polyline to a normal polyline
PL_UpdateLine	Update a line object with the two new end points. All line properties, including the handle are maintained
PL_UpdatePoly	Update a polyline entity with a new vertex list. This ensures that all polyline properties, including the handle are maintained Arguments: