The Jump To Definition command takes the symbol from the first word in the current selection and jumps to its definition. The Go Back and Go Forward commands are useful for navigating back and forth between all your jumping spots.
To use this command:
1.Select within the symbol name as it appears in a source file.
2.Type Alt+= to jump to the actual symbol definition.
Hold down Ctrl and left click with the mouse on a symbol name to jump to its definition.
You can also use the Jump To Definition command when the cursor is in a file name in an #include statement to open the file.