Translations:New Template System in LS3.x/112/en

They will be added to a Yii Asset Packet based on the name of the theme. So when Asset Manager is on (debug mode being off), those files will be copied to the tmp directory with the rest of the theme (so you can use relative path in the CSS and JS to reach the image files). About the Asset manager in Yii: https://www.yiiframework.com/wiki/148/understanding-assets About packages in Yii: http://www.yiiframework.com/doc/api/1.1/CClientScript#packages-detail