Format Text and Export as HTML

How do you format text in Mathematica?

For instance, if I want to underline a specific expression or hyperlink part of the text, I split the string in multiple parts, format them separately and present everything in a Row or Column. This is not satisfactory, as one can see in the attached notebook, when I use Row for the first list there, it won’t look like a proper, continuous sentence.
Is there a better way to do that?

Also, in the notebook, the second output contains some patched strings. Why do I get an error when I try to export that as an HTML? (Why isn’t it possible to export in .doc?)

sorry this question is unclear. Please be more specific. The attached file does not help.

What exactly is unclear to you, Pieter?