Markup Helper covers the following types of text markup:
* Wrappers, surrounding text with them
- Identical open and close text pairs (such as code blocks in Markdown)
- Different open and close text pairs (such as comment blocks in some computer languages) (e.g., "<!-- comment block in HTML -->")
* Prefixes, adding them to the beginning of every single line (such as quote blocks in email, Markdown, etc.)