Inconsequential but thematic code (encodes and displays a Unicode entity)
written to include all braces (([{|}])), hash (#), and 0/O distinction.
Inspired by font comparison snippets at
<http://hivelogic.com/articles/top-10-programming-fonts>.
<html><pre><span class=""><!-- HTM --></span>
+ Hash[ :nbsp => 0O2_40 ].each {|name, cp| puts "#{name} is '#{cp.chr}'" }
+
Mathematics and sciences:
∮ E⋅da = Q, n → ∞, ∑ f(i) = ∏ g(i), ⎧⎡⎛┌─────┐⎞⎤⎫