Custom Fields
Custom Fields are WordPress' way of giving you the possibility to include some additional information in your blog posts (information that you don't want to display directly on the frontend). In essence, Custom Fields are a kind of semi-programming tool--they are not exactly code as understood by PHP programmers, yet they do give you the possibility to tweak your content in a certain, non-stock way. Many WordPress themes use various Custom Fields to style the individual aspects of posts. For example, some theme creators use Custom Fields to disable the sidebar on certain posts or include various typographic elements.
As another example, let's say you are a gadget reviewer and every blog post is a review of some cool new thing. ...
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