<Tr> <Td> 9 </Td> <Td> Kernel routines </Td> </Tr> <Tr> <Td> n </Td> <Td> Tcl / Tk keywords </Td> </Tr> <Tr> <Td> x </Td> <Td> The X Window System </Td> </Tr> <P> Some sections are further subdivided by means of a suffix; for example, in some systems, section 3C is for C library calls, 3M is for the math library, and so on . A consequence of this is that section 8 (system administration commands) is sometimes relegated to the 1M subsection of the main commands section . Some subsection suffixes have a general meaning across sections: </P>

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