Using this plugin one can navigate the code easily.
Find Callers/Callees
Press Alt+C/V to find callers or callees
Press Alt+Up/Down/Left/Right in Sublime Text to jump to new functions
Find Class Hierarchy
Press Alt+B to find base and derived class
Find Overloaded Functions
Press Alt+O to find overloaded functions
Find Class Member
Press Alt+M to find all class variables and the largest member function.
Press Alt+M several times to see smaller member functions.
Find Variable Usage
Press Alt+U to find all functions that use selected variable
Save / Load Relationship Graph
Press Alt+Num to show relationship graph listed at the top left corner
Press Ctrl+Num to add selected edge to a relationship graph