vb_ProcData.vb_invoke_func is «generated» after recording a macro (at least in Excel). rec and assigning the keyboard shortcut ctrl+T, adding a description, the corresponding Attribute lines looks like so: Sub rec() Attribute rec.VB_Description = "This macro was recorded to\nreveal Attribute values." Attribute rec.VB_ProcData.VB_Invoke_Func = "t\n14" … End Sub
application.onKey (Excel) are not stored with such attributes