Hello. In the editor window, where my main.cpp is opened, I right-click on "#include <iostream>" and choose "open #include file: 'iostream'". As I understand, this must cause opening of iostream header in new tab. But instead this I get the next warning message: "not found: iostream". The same thing with other included headers. Also when I try to find declaration of funtcions, I use in my program, I get the same "not found" warning. Still the program compiles and runs without errors. What am I doing or understanding wrong? Thanks.