Here is a list of all macros with links to the files they belong to:

• BITSUBSTITUTION : ip4_bit.c, ip6_bit.c
• TIMEOUT : remoteinfo.c
• WHO : argv0.c, fixcrio.c, mconnect-io.c, rblsmtpd.c, recordio.c, tcpclient.c, tcprules.c, tcprulescheck.c, tcpserver.c