johnh10

If your blog gets so many comments you tend to skim them during moderation, you can sometimes miss ‘manual spam’ or trollish comments. This plugin will highlight keywords you specify so certain remarks grab your attention for further review. It is useful for blogs that get numerous comments and the moderator tends to skim instead of reading each and every one.

Comment Moderation Highlighter

This plugin will highlight keywords you specify on the admin moderation page, making it easier to spot manual spam and/or troll comments.

diekleinehexe

This plugin will add a button to both the visual and HTML WordPress Editor panel allowing you to easily insert code for WP-Syntax. WP-Syntax is a syntax highlighting plugin for WordPress which can be downloaded from https://wordpress.org/extend/plugins/wp-syntax/
Usage
<ol>
<li>Select the text you want to have highlighted by WP-Syntax</li>
<li>Click the button pre (WP-Syntax) in HTML editing mode or the icon with colored lines in visual editing mode</li>
<li>Enter the language and starting line separated by a comma. The later is optional.</li>
</ol>

WP-Syntax Editor Integration Plugin

Adds new buttons to the visual and html editor window which allow to use WP-Syntax.

Comment Moderation Highlighter vs WP-Syntax Editor Integration Plugin