Echelon IzoT Commissioning Tool - Manual (Page 314)

Commissioning Tool does not change the attribute on any other
plug-ins.
If multiple plug-ins are registered for the same command and
object class, the plug-in with this check box selected will be the
one invoked. If multiple plug-ins have this check box selected,
IzoT Commissioning Tool invokes the first plug-in that it finds
with this option set.
Prelaunch Keeps one instance of the plug-in program active (if registered)
so that it is immediately available for commands that invoke it.
When you select or clear this check box, IzoT Commissioning
Tool will select or clear it for all IzoT Commissioning Tool
networks on your computer. If you clear this option, the change
is not effective until you close and then re-open the network.
If the plug-in does not support pre-launch capability, this check
box is disabled.
Settings
Multiple Objects Indicates whether the plug-in supports multiple objects. For
example, the OpenLNS CT Browser supports browsing multiple
functional blocks.
Single Instance Indicates whether the plug-in supports using a single instance of
the plug-in when it is requested for the same object multiple
times.
Description Provides a brief description of the plug-in.
Click OK to return to the IzoT Commissioning Tool Plug-ins dialog.
Viewing Plug-in Status
You can view the status of plug-ins that IzoT Commissioning Tool has started and to which it still
holds a reference. IzoT Commissioning Tool holds a reference to a plug-in after starting one if the
plug-in was pre-launched, and it is a single-instance, multi-object plug-in. When IzoT Commissioning
Tool holds a reference to a plug-in, it will typically prevent the plug-in from being terminated unless
you release the plug-in.
To access the OpenLNS Plug-in Status dialog, click Add-ins, point to Plug-Ins, and then click
Plug-In Status.
298 Using Plug-ins