Let's you choose a font for your posts or pages from the admin edit page for your posts or pages. Will load the styles into the page dynamically
To allow you to dynamically modify the fonts that are used on the post or page level. You can also have this plugin only modify a specific part of your post page (this will apply for all posts or all pages).
Identify the HTML element identifier for your content area of your theme. HTML ID is preferred, but class would work alright if it is unique enough. Put this identifier into the admin page in the content HTML identifiers area.