	Name	Description
	Invalid	This value associated with a port in the ValidPortsCache indicates that it is not valid to make a link between OriginalStartPort and that port.
	Valid	This value associated with a port in the ValidPortsCache indicates that it is valid to make a link between OriginalStartPort and that port.

	Name	Description
	CurrentObject	Gets or sets this tool's CurrentObject property. (Inherited from Northwoods.Go.GoTool)
	EndPort	Gets or sets the temporary ending port.
	FirstInput	Gets this view's FirstInput property. (Inherited from Northwoods.Go.GoTool)
	Forwards	Gets or sets whether the user's linking operation started at the "From" port.
	ForwardsOnly	Gets or sets whether users must draw their new links starting at the "from" port and going to the "to" port.
	LastInput	Gets this view's LastInput property. (Inherited from Northwoods.Go.GoTool)
	Link	Gets or sets the link that the user is manipulating for this linking operation.
	OriginalEndPort	Gets or sets the port at the end of an existing link that is being reconnected.
	OriginalStartPort	Gets or sets the port from which the user is starting or modifying a link.
	Selection	Gets this view's Selection property. (Inherited from Northwoods.Go.GoTool)
	StartPort	Gets or sets the temporary starting port.
	TransactionResult	Gets or sets whether to abort the current transaction if this tool is stopped; if set to a string, the string specifies the name of the transaction that will be finished when the tool stops. (Inherited from Northwoods.Go.GoTool)
	ValidPortsCache	Gets the hashtable of all known ports that are valid for this particular linking operation.
	View	Gets the view for which this tool is handling canonicalized input events. (Inherited from Northwoods.Go.GoTool)

	Name	Description
	CanStart	This predicate should be true if this tool can be activated to be the view's current tool. (Inherited from Northwoods.Go.GoTool)
	DoCancelMouse	Overridden. Clean up the link state before stopping this tool.
	DoCancelRelink	This is called by DoCancelMouse when a relinking was cancelled by the user.
	DoClick	Any tool can call this method in order to implement the standard click behavior. (Inherited from Northwoods.Go.GoTool)
	DoKeyDown	The view calls this method when the user presses a key on the keyboard; all of the event information is provided by the LastInput property. (Inherited from Northwoods.Go.GoTool)
	DoLinking	This method is called by DoMouseMove to find the nearest valid port and adjust the temporary link according to where the given point is.
	DoMouseDown	The view calls this method upon a mouse down event; all of the event information is provided by the LastInput property. (Inherited from Northwoods.Go.GoTool)
	DoMouseHover	The view calls this method after the mouse rests for a while at a point; all of the event information is provided by the LastInput property. (Inherited from Northwoods.Go.GoTool)
	DoMouseMove	Overridden. A mouse move during a linking operation involves calling DoLinking and autoscrolling the view.
	DoMouseUp	Overridden. A mouse up event ends the linking operation.
	DoMouseWheel	The view calls this method as the mouse wheel rotates; all of the event information is provided by the LastInput property. (Inherited from Northwoods.Go.GoTool)
	DoNewLink	This is called by DoMouseUp in order to create a new link.
	DoNoNewLink	This is called by DoMouseUp or DoCancelMouse when no new link was drawn by the user.
	DoNoRelink	This is called by DoMouseUp or DoCancelMouse when an existing link was purposely not reconnected by the user to any port.
	DoRelink	This is called by DoMouseUp in order to reconnect the existing link.
	DoSelect	Any tool can call this method in order to implement the standard selection behavior for a user click. (Inherited from Northwoods.Go.GoTool)
	IsBeyondDragSize	Determine if the mouse has gone beyond the DragSize distance to be considered a drag instead of a sloppy click. (Inherited from Northwoods.Go.GoTool)
	IsValidFromPort	This predicate is called to decide if it is OK for a user to start drawing a link from a given port.
	IsValidLink	This predicate is called during the process of finding the nearest port that the user can link to.
	IsValidToPort	This predicate is called to decide if it is OK for a user to start drawing a link backwards at a given port that will be the destination for the link.
	PickNearestPort	Find the valid document port nearest to a given point.
	PickPort	Find a port in the document at the given point.
	PortPoint	Return a `PointF` representing the position of the port.
	Start	This method is called when this tool becomes the view's current tool. (Inherited from Northwoods.Go.GoTool)
	StartNewLink	Start the process of drawing a new link from a given port.
	StartRelink	Start the process of reconnecting an existing link at a given port.
	StartTransaction	Start a transaction on the view. (Inherited from Northwoods.Go.GoTool)
	Stop	Overridden. Cleaning up from any kind of linking operation involves removing any temporary ports or link from the view and stopping the current transaction.
	StopTool	This method just causes the view's current tool to be stopped and to start the view's default tool instead as the current tool. (Inherited from Northwoods.Go.GoTool)
	StopTransaction	Stop the current transaction, aborting it if TransactionResult is null. (Inherited from Northwoods.Go.GoTool)

	Name	Description
	CreateTemporaryLink	This is responsible for creating a temporary link when the user is drawing a new link.
	CreateTemporaryPort	This is responsible for creating a temporary port for the linking process.
	ImitatePort	Change the endport's behavior for link routing to be like the given port iport.

Reference