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+The following are examples of pl_syscolors.d.
+
+This is a simple script to trace the flow of Perl subroutines and system
+calls made, and renders the output in color ("colour") using terminal
+escape sequences (which you can tweak by modifying the script).
+
+Here it traces the example program, Code/Perl/func_abc.pl.
+
+WARNING: This output is full of terminal escape sequences, so if you are
+trying to view this through an editor or web browser - it may look awful.
+Try viewing this using "more" (although, depending on your terminal, it
+still may look awful).
+
+# pl_syscolors.d
+C PID DELTA(us) FILE:LINE TYPE -- NAME
+0 305181 2 ":- syscall -> munmap
+0 305181 33 ":- syscall <- munmap
+0 305181 59 ":- syscall -> mmap
+0 305181 18 ":- syscall <- mmap
+0 305181 35 ":- syscall -> setcontext
+0 305181 8 ":- syscall <- setcontext
+0 305181 8 ":- syscall -> getrlimit
+0 305181 9 ":- syscall <- getrlimit
+0 305181 8 ":- syscall -> getpid
+0 305181 7 ":- syscall <- getpid
+0 305181 64 ":- syscall -> setcontext
+0 305181 6 ":- syscall <- setcontext
+0 305181 137 ":- syscall -> sigpending
+0 305181 8 ":- syscall <- sigpending
+0 305181 1148 ":- syscall -> sysi86
+0 305181 11 ":- syscall <- sysi86
+0 305181 105 ":- syscall -> open64
+0 305181 96 ":- syscall <- open64
+0 305181 13 ":- syscall -> ioctl
+0 305181 18 ":- syscall <- ioctl
+0 305181 14 ":- syscall -> close
+0 305181 14 ":- syscall <- close
+0 305181 123 ":- syscall -> sigaction
+0 305181 9 ":- syscall <- sigaction
+0 305181 49 ":- syscall -> brk
+0 305181 9 ":- syscall <- brk
+0 305181 8 ":- syscall -> brk
+0 305181 16 ":- syscall <- brk
+0 305181 63 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 8 ":- syscall <- brk
+0 305181 43 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 8 ":- syscall <- brk
+0 305181 141 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 8 ":- syscall -> brk
+0 305181 9 ":- syscall <- brk
+0 305181 24 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 8 ":- syscall <- brk
+0 305181 30 ":- syscall -> getuid
+0 305181 7 ":- syscall <- getuid
+0 305181 10 ":- syscall -> getuid
+0 305181 6 ":- syscall <- getuid
+0 305181 10 ":- syscall -> getgid
+0 305181 7 ":- syscall <- getgid
+0 305181 9 ":- syscall -> getgid
+0 305181 6 ":- syscall <- getgid
+0 305181 117 ":- syscall -> sysconfig
+0 305181 9 ":- syscall <- sysconfig
+0 305181 19 ":- syscall -> open64
+0 305181 59 ":- syscall <- open64
+0 305181 15 ":- syscall -> read
+0 305181 11 ":- syscall <- read
+0 305181 8 ":- syscall -> close
+0 305181 8 ":- syscall <- close
+0 305181 34 ":- syscall -> gtime
+0 305181 7 ":- syscall <- gtime
+0 305181 34 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 9 ":- syscall <- brk
+0 305181 44 ":- syscall -> sysconfig
+0 305181 7 ":- syscall <- sysconfig
+0 305181 9 ":- syscall -> brk
+0 305181 6 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 8 ":- syscall <- brk
+0 305181 145 ":- syscall -> open64
+0 305181 16 ":- syscall <- open64
+0 305181 16 ":- syscall -> fcntl
+0 305181 7 ":- syscall <- fcntl
+0 305181 10 ":- syscall -> sigaction
+0 305181 7 ":- syscall <- sigaction
+0 305181 8 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 9 ":- syscall <- brk
+0 305181 104 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 8 ":- syscall <- brk
+0 305181 88 ":- syscall -> getpid
+0 305181 7 ":- syscall <- getpid
+0 305181 8 ":- syscall -> brk
+0 305181 6 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 8 ":- syscall <- brk
+0 305181 105 ":- syscall -> fstat64
+0 305181 10 ":- syscall <- fstat64
+0 305181 16 ":- syscall -> fstat64
+0 305181 7 ":- syscall <- fstat64
+0 305181 25 ":- syscall -> ioctl
+0 305181 8 ":- syscall <- ioctl
+0 305181 7 ":- syscall -> read
+0 305181 23 ":- syscall <- read
+0 305181 18 ":- syscall -> llseek
+0 305181 8 ":- syscall <- llseek
+0 305181 126 ":- syscall -> llseek
+0 305181 7 ":- syscall <- llseek
+0 305181 34 ":- syscall -> llseek
+0 305181 7 ":- syscall <- llseek
+0 305181 30 ":- syscall -> llseek
+0 305181 7 ":- syscall <- llseek
+0 305181 12 ":- syscall -> read
+0 305181 8 ":- syscall <- read
+0 305181 11 ":- syscall -> llseek
+0 305181 6 ":- syscall <- llseek
+0 305181 7 ":- syscall -> close
+0 305181 8 ":- syscall <- close
+0 305181 27 func_a:15 sub -> ./func_abc.pl
+0 305181 36 ":- syscall -> ioctl
+0 305181 7 ":- syscall <- ioctl
+0 305181 8 ":- syscall -> fstat64
+0 305181 8 ":- syscall <- fstat64
+0 305181 8 ":- syscall -> brk
+0 305181 7 ":- syscall <- brk
+0 305181 7 ":- syscall -> brk
+0 305181 9 ":- syscall <- brk
+0 305181 23 ":- syscall -> fstat64
+0 305181 7 ":- syscall <- fstat64
+0 305181 13 ":- syscall -> gtime
+0 305181 7 ":- syscall <- gtime
+0 305181 11 ":- syscall -> nanosleep
+0 305181 1007250 ":- syscall <- nanosleep
+0 305181 24 ":- syscall -> gtime
+0 305181 15 ":- syscall <- gtime
+0 305181 21 func_b:9 sub -> ./func_abc.pl
+0 305181 27 ":- syscall -> gtime
+0 305181 6 ":- syscall <- gtime
+0 305181 8 ":- syscall -> nanosleep
+0 305181 1009847 ":- syscall <- nanosleep
+0 305181 24 ":- syscall -> gtime
+0 305181 15 ":- syscall <- gtime
+0 305181 21 func_c:4 sub -> ./func_abc.pl
+0 305181 27 ":- syscall -> gtime
+0 305181 6 ":- syscall <- gtime
+0 305181 8 ":- syscall -> nanosleep
+Function A
+Function B
+Function C
+0 305181 1009916 ":- syscall <- nanosleep
+0 305181 24 ":- syscall -> gtime
+0 305181 15 ":- syscall <- gtime
+0 305181 20 func_c:4 sub <- ./func_abc.pl
+0 305181 29 func_b:9 sub <- ./func_abc.pl
+0 305181 12 func_a:15 sub <- ./func_abc.pl
+0 305181 51 ":- syscall -> schedctl
+0 305181 53 ":- syscall <- schedctl
+0 305181 16 ":- syscall -> setcontext
+0 305181 8 ":- syscall <- setcontext
+0 305181 21 ":- syscall -> write
+0 305181 97 ":- syscall <- write
+0 305181 28 ":- syscall -> open64
+0 305181 101 ":- syscall <- open64
+0 305181 9 ":- syscall -> ioctl
+0 305181 10 ":- syscall <- ioctl
+0 305181 10 ":- syscall -> close
+0 305181 15 ":- syscall <- close
+0 305181 35 ":- syscall -> rexit
+
+If the colors don't suit you (or you'd rather HTML colored output), it
+should be trivial to modify the script to do so.
+