This file is indexed.

/etc/circos/makehuesteps is in circos 0.69-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/usr/bin/env perl 

use strict;
use Math::Round qw(round);

# in steps
for my $steps (1..360) {
    next unless 360/$steps == int(360/$steps);
    my @hue = map { sprintf("%03d", 360/$steps*($_-1)) } (1..$steps);
    printf("hue-s%d = hue(%s)\n",360/$steps,join("|",@hue));
}

# in divisions

for my $divisions (3..30) {
    my @hue;
    for my $step ( 0 .. $divisions-1 ) {
	push @hue, 360 * $step / $divisions;
    }   
    printf("hue-%d = hue(%s)\n",$divisions,join("|",map { sprintf("%03d",round $_) } @hue));
}