To save the active
net to a file, choose File → Save As
or click the 
toolbar button. You will be prompted
for the file name and what directory to place it in. After you have
saved a net, its window title will no longer be “Untitled-x”, but instead
it will be based on the name of the file. Then you can save it subsequent
times by choosing File →
Save or pressing ctrl+s
without being prompted for the name.
Changed-Indicator: If there is a * or + after the title of the net in its window title bar, then it means that the net has been changed since it was last read or saved, so that the screen version is different from the file version. If you exit Netica or close the window, you will be asked if you want to save the changes first. When you save the net, the changed-indicator will disappear. A * indicator means substantial changes have been made, a + means only cosmetic changes were. (More Info)
File Format: The net normally gets saved as an efficient binary file in the NETA format (optionally encrypted), with file extension .neta. This file is machine and platform independent, so Netica Application and Netica API on Windows, Linux, MacOS, Solaris, etc. using Intel, AMD, PowerPC, ARM, etc. processors can work with it. All future versions of Netica will be able to open it, and most past versions can as well (but of course by ignoring the new Netica features that they lack).
From the dialog box for saving the file, you can choose an alternative format known as the DNET format (file extension .dne or .dnet), from the "Save as type:" choice at the bottom. It contains only ASCII text, so it is useful if you want to examine or edit the file with a text editor, or if it will be read by other programs that understand DNET. All future versions of Netica will be able to read and write DNET files, and DNET files have the same interoperability described above for NETA files. A document precisely describing the DNET-1 file format is available from the Norsys web site (called “DNET_File_Format.txt”).
Cases: To learn about saving
and reading cases, click here.