Paste the following code in functions.php
add_action('admin_head', 'excerpt_textarea_height');
function excerpt_textarea_height() {
echo'
<style type="text/css">
#excerpt{ height:500px; }
</style>
';
}
The links are “cleaner” and more descriptive, improving their “friendliness” to both users and search engines.
They prevent undesired “inline linking”, which can waste bandwidth.
They hide the inner workings of a web site’s address to visitors, which can prevent them from discovering query strings that could compromise the site.
The site can continue to use the same URLs even if the underlying technology used to serve them is changed (for example, switching to a new blogging engine).
There can, however be drawbacks as well; if a user wants to modify a URL to retrieve new data, the rewrite engine may hinder the construction of custom queries due to the lack of named variables.
A rewrite engine is software that modifies a web URL’s appearance (URL rewriting). Rewritten URLs (sometimes known as short, fancy URLs, or search engine friendly – SEF) are used to provide shorter and more relevant-looking links to web pages. The technique adds a degree of separation between the files used to generate a web page and the URL that is presented to the World.
We can cache the file using htaccess so that we can improve
the perfomace of a website
General Format
<FilesMatch “.(Extenstion of the file to be cached)$”>
Header set Cache-Control “max-age=cache time″
</FilesMatch>
Example
<FilesMatch “.(html|htm)$”>
Header set Cache-Control “max-age=43200″
</FilesMatch