Seen in boost https://github.com/stan-dev/math/blob/fe521e0d660541b265418c8adb0a2da608983547/lib/boost_1.84.0/tools/boostbook/xsl/caramel/LICENSE Similar to, but at first glance somewhat different from indiana-extreme-1.2
Seen in boost
https://github.com/stan-dev/math/blob/fe521e0d660541b265418c8adb0a2da608983547/lib/boost_1.84.0/tools/boostbook/xsl/caramel/LICENSE
Similar to, but at first glance somewhat different from indiana-extreme-1.2