The project tree contains two subtrees:
The 'Libraries' subtree is used for announcing libraries. Standard function blocks like emergency stop, protective monitoring or two-hand control, which were defined together with the PLCopen, are available as basic library objects.
The 'Logical POUs' subtree contains the POUs. Naturally, all editing functions for POUs (copying, moving, renaming etc.) are strictly based on Windows® standard functions that you already know from the Windows Explorer.