In a nutshell:
My Web site has a few specially themed categories, and one ("Characters") doesn't have a sidebar. That's the way I want it. I just commented out the get_sidebar command.
This way, if anyone wants to see all the characters in my comic, they see them all in a row, but with no sidebar on the page.
But if they click on one particular character entry, then WP formats everything in the single.php category, which DOES have a sidebar.
I don't want to get rid of the sidebar, because it's useful for most single pages. Generally speaking, I want to keep the sidebar for every single page EXCEPT character pages.
How can I tell Wordpress to follow the category-3.php template for single posts in Category 3, but follow the regular single.php template for every other single post?
I know about if/else commands, but I'm not sure how to apply them in this case...