Underline formatting option should be implemented in all the SE sites
50951
Why can we format text with bold and italic but not underline?
82357
Is support for Markdown tables on Stack Overflow planned?
46277
Pretty formattings for warning and info blocks
30649
How can I underline a single word with LaTeX?
84225
Is it possible to have italic and bold text, and linebreaks under the \underline{text} command?
63420
How To Auto-Format / Indent XML/HTML in Notepad++
107631
How do I tidy up an HTML file's indentation in VI?
126053
Underlining a string using iText
13878
Formatting each part/section/subsection
95795
How to highlight source code in HTML?
115006
Formatting dynamic text element in Data Driven Pages?
14470
Please add the ability to fold blocks of code in questions and answers
76323
Underlining visited links
108719
How to highlight paragraph (linebreak preserving) as well as itemize, tabular etc.?
7427
Remove underline from links in TextView - Android
77797
Inserting \S in front of section or chapter headings
91460
Markdown italics with underscores look good in preview but not in answer