cscope - 15.9-2 main

Cscope is an interactive text screen based source browsing tool.
Although it is primarily designed to search C code (including lex
and yacc files), it can also be used for C++ code.
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Using cscope, you can easily search for where symbols are used and
defined. Cscope is designed to answer questions like:
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- Where is this variable used?
- What is the value of this preprocessor symbol?
- Where is this function in the source files?
- What functions call this function?
- What functions are called by this function?
- Where does the message "out of space" come from?
- Where is this source file in the directory structure?
- What files include this header file?