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In a default install of WordPress, each time you edit a post or page, WordPress will automatically save your previous posts/pages allowing the possibility of reverting to a previous version of that post or page. This is a cool feature, but it can get a little ridiculous when you have dozens of previous versions sitting below the post–and taking up space in your db. As you can see in the following screenshot, with just a couple of edits to this post, I’ve already racked-up 4 revisions…by the time I finish editing, I’ll probably have a dozen or so…

Each of those revisions requires a separate record in the db. So, although this is a cool feature, it can significantly add to db bloat.  If you don’t really care to have all those revisions sitting around, or if you want to limit the number, WordPress does provide an option to change the default behavior allowing you to either disable revisions completely or allowing you to limit the number of revisions saved. To make these changes you do need to edit your wp-config.php file directly…currently, there is no option for doing this in WP admin.

Disable Post Revisions

To completely disable the revisions feature, add (or if already present) edit the following code to your wp-config.php file. The word (false) disables this feature.

define('WP_POST_REVISIONS', false );

Specify the Number of Post Revisions

If you want to keep the revisions feature, but limit the number revisions saved, then use the same code as above, but change false to the number of revisions you want to keep. In the example below, WordPress will keep the latest 3 post or page revisions.

define('WP_POST_REVISIONS', 3);

No related posts.

Note: The following is made available under GPL from http://codex.wordpress.org/GPL. It may be edited a little from its original form, but probably not a lot. There is no guarantee this information is accurate…use at your own risk.
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To write a post:

1. Log in to your WordPress Administration Panel.
2. Click the Posts tab.
3. Click the Add New Sub Tab
4. Start filling in the blanks.
5. As needed, select a category, add tags, and make other selections from the sections below the post. Each of these sections is explained below.
6. When you are ready, click Publish.

Title
The title of your post. You can use any words or phrases. Avoid using the same title twice as that will cause problems. You can use commas, apostrophes, quotes, hypens/dashes, and other typical symbols in the post like “My Site – Here’s Lookin’ at You, Kid.” WordPress will clean it up for the link to the post, called the post-slug.

Post Editing Area
The big blank box where you enter your writing, links, links to images, and any information you want to display on your site. You can use either the Visual or the HTML view to compose your posts. For more on the HTML view, see the section below, Visual Versus HTML View.

Preview button
Allows you to see how your post will look before officially publishing it.

Publish box
Contains buttons that control the state of your post. The main states are Published, Pending Review, and Draft. A Published status means the post has been published on your blog for all to see. Pending Review means the draft is waiting for review by an editor prior to publication. Draft means the post has not been published and remains a draft for you. If you select a specific publish status and then click the update post or Publish button, that status is applied to the post. For example, to save a post in the Pending Review status, select Pending Review from the Publish Status drop-down box, and then click Save As Pending. (You can see all posts organized by status by going to Posts > Edit). To schedule a post for publication on a future time or date, click “Edit” in the Publish area next to the words “Publish immediately”. Change the settings to the desired time and date. You must also hit the “Publish” button when you have completed the post for the post to be published at the desired time and date.

Publish box
Visibility – This determines how your post appears to the world. Public posts will be visible by all website visitors once published. Password Protected posts are published to all, but visitors must know the password to view the post content. Private posts are visible only to you (and to other editors or admins within your site)

Permalink
After you save your post, the Permalink below the title shows the potential URL for the post, as long as you have permalinks enabled. (To enable permalinks, go to Settings > Permalinks.) The URL is generated from your title. In previous versions of WordPress, this was referred to as the “page-slug.” The commas, quotes, apostrophes, and other non-HTML favorable characters are changed and a dash is put between each word. If your title is “My Site – Here’s Lookin’ at You, Kid”, it will be cleaned up to be “my-site-heres-lookin-at-you-kid” as the title. You can manually change this, maybe shortening it to “my-site-lookin-at-you-kid”.

Save
Allows you to save your post as a draft / pending review rather than immediately publishing it. To return to your drafts later, visit Posts – Edit in the menu bar, then select your post from the list.

Publish
Publishes your post on the site. You can edit the time when the post is published by clicking the Edit link above the Publish button and specifying the time you want the post to be published. By default, at the time the post is first auto-saved, that will be the date and time of the post within the database.

Post Tags
Refers to micro-categories for your blog, similar to including index entries for a page. Posts with similar tags are linked together when a user clicks one of the tags. Tags have to be enabled with the right code in your theme for them to appear in your post. Add new tags to the post by typing the tag into the box and clicking “Add”.

Categories
The general topic the post can be classified in. Generally, bloggers have 7-10 categories for their content. Readers can browse specific categories to see all posts in the category. To add a new category, click the +Add New Category link in this section. You can manage your categories by going to Posts > Categories.

Excerpt
A summary or brief teaser of your posts featured on the front page of your site as well as on the category, archives, and search non-single post pages. Note that the Excerpt does not usually appear by default. It only appears in your post if you have changed the index.php template file to display the Excerpt instead of the full Content of a post. If so, WordPress will automatically use the first 55 words of your post as the Excerpt or up until the use of the More Quicktag mark. If you use an Explicit Excerpt, this will be used no matter what. For more information, see Excerpt.

Send Trackbacks
A way to notify legacy blog systems that you’ve linked to them. If you link other WordPress blogs, they’ll be notified automatically using pingbacks. No other action is necessary. For those blogs that don’t recognize pingbacks, you can send a trackback to the blog by entering the website address(es) in this box, separating each one by a space. See Trackbacks and Pingbacks for more information.

Custom Fields
Custom_Fields offer a way to add information to your site. In conjunction with extra code in your template files or plugins, Custom Fields can modify the way a post is displayed. These are primarily used by plugins, but you can manually edit that information in this section.

Discussion
Options to enable interactivity and notification of your posts. This section hosts two check boxes: Allow Comments on this post and Allow trackbacks and pingbacks on this post. If Allowing Comments is unchecked, no one can post comments to this particular post. If Allowing Pings is unchecked, no one can post pingbacks or trackbacks to this particular post.

Password Protect This Post
To password protect a post, click Edit next to Visibility in the Publish area to the top right, then click Password Protected, click Ok, and enter a password. Then click OK. Note – Editor and Admin users can see password protected or private posts in the edit view without knowing the password.

Post Author
A list of all blog authors you can select from to attribute as the post author. This section only shows if you have multiple users with authoring rights in your blog. To view your list of users, see Users tab on the far right. For more information, see Users and Authors.

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