As a general rule, b2evolution generates thumbnails of all the images that you attach to a post ( more information about this subject can be found in this page: Caching and Cache Levels ), and the Watermark Plugin lets you add watermarks to those thumbnails. This plugin has per-collection settings, which means that its settings may be defined globally and also individually for each collection. The default global settings form, including its default values, is shown in the image below and listed as following:
Category: "4.x (incomplete list)"
This Renderer plugin allows several formating options for your text. This is especially useful on blogs where HTML is not allowed.
This Renderer Plugin allows clean formatting of computer code in your posts.
This plugin is no longer necessary for most users because similar functionality has been integrated into b2evolution's core. For more information, please see: Markdown Plugin
A renderer that allows users to format text using Markdown syntax. From the Markdown website: "Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML)."
The Smilies Plugin provides a toolbar for the "Write" tab, which every user can disable and replaces the text smilies (e.g. :) ) when the item gets displayed with the "Smileys" renderer activated for it.