Highlighting paragraphs in Latex

When revising a document, I often want to highlight my changes, so my collaborators can easily see what I changed.

\underline

works for single words, but it puts everything in a horizontal box and long text isn't wrapped anymore.

Instead, I use the package soul and \ul to underline.

\usepackage{soul}

Or you can highlight text using \hl. This will underline the text unless you use the color package, then it turns into typical marker-highlight.

\usepackage{color}