May Safari to East Africa
Stack overflow in regexp matcher: /
^ # Start of line
<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del) # Start tag: \2
\b # word break
(.*\n)*? # Any number of lines, minimal match
<\/\1> # Matching end tag
[ ]* # trailing spaces
$ # End of line or document
/ix