How to quickly create a Zen sub-theme using Drush.
If you use a lot of process and preprocess functions within your Drupal theme, then your template.php can get very long and it can become difficult to find a certain piece of code. Following the example of the Omega theme, I've started separating my process and preprocess functions into their own files.
An example .info file for a Drupal 7 theme.
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How to create an Omega subtheme on the command line using Drush.