, or right-clicking and choosing Delete).Cutting Nodes: Selected nodes can be removed from the net and transferred to the clipboard by choosing Edit → Cut (or pressing ctrl+x, clicking , or right-clicking and choosing Delete).
Alternately, they can be entered into the clipboard without removing them from the net with Edit → Copy (or pressing ctrl+c, or clicking 
).
If no nodes are selected when the copy command is done, the whole net will be copied to the clipboard.
Pasting Nodes: Once the nodes are in the clipboard, you can duplicate them into any net by opening the window for that net, optionally clicking in it where you want them to be placed, and then choosing Edit → Paste (or pressing ctrl+v, or clicking 
). When copying from one net window to another, the two windows must both be within the same running instance of Netica; if there are two separate instances of Netica running, you can't copy and paste between them.
All links between the transferred nodes, all their properties, and all their CPTs will be maintained during the transfers. Links that enter cut or copied nodes from a node not being cut or copied will appear as disconnected links in the duplicate. Links that go from a cut or copied node to a node not being cut or copied, will not be copied.
Nets may be copied and pasted into other programs, such as Microsoft Word. More Info
Duplicate: Nodes may be duplicated within their net, by selecting them and holding down the ctrl key while dragging the outline to where you want the new nodes to be (in older versions of Netica, this operation was done by choosing Edit → Duplicate). All links between them, and all their properties and probability tables will be duplicated as in the copy/paste situation, but any links to them from parent nodes not being duplicated are handled differently. Instead of being disconnected, they are duplicated as well. This is especially useful to create nodes representing repeated, independent observations of some node (e.g. “virtual evidence”).
If you want to duplicate a large portion of the nodes, choose Window → Duplicate Net (or right-click the net background and choose Duplicate in New Window). In the resultant net, delete any of the nodes you don't want.
Node Names: Since every node name in a net must be unique, a node’s name must be changed when duplicating it into a net already having that name. Netica does this if necessary, by adding a number to the end of the old name, or incrementing the number if there already is one. Of course node titles don’t have to be unique, so after duplicating or pasting you may have several nodes with the same title, which you can change manually.