Going into Sue2 I find several documents, one of which is the NSpice-25-manual.pdf document. Looking at this document I find that it is referring to example circuits located in /examples/xspice/ folder, which does not even exist in my installation. What is going on here?  And from what I can see in this document it is talking about using 'ngspice xspice_c1.cir' to open the above example in a DOS  command prompt window to execute the file. What is going on with this document! This tool  is supposed to be about using Sue2 and not DOS command prompts! Any info on what this document is about would be well appreciated. How does it even relate to Sue2?