[1] [CITE[MKDoc::Text::Structured - search.cpan.org]]
( ([TIME[2017-01-11 02:10:25 +09:00]]))
<http://search.cpan.org/dist/MKDoc-Text-Structured/lib/MKDoc/Text/Structured.pm>

[2] [CITE@en[Plain text emails converted to HTML - SendGrid Documentation | SendGrid]]
( ([[SendGrid]]著, [TIME[2017-01-06 06:53:40 +09:00]]))
<https://sendgrid.com/docs/Classroom/Build/Format_Content/plain_text_emails_converted_to_html.html>