Translations:New Template System in LS3.x/8/en
From LimeSurvey Manual
Theme Editor
This documentation supposes you already know how to use the Theme Editor in the previous version of LS.
The Theme Editor has been kept as close as possible to the original one. So, when you open a Core Theme, you can’t edit it. But now, instead of a “copy” button, you have an “extend button”.