# Glossary

**Base price** - the minimal item price without any options selected\
**Published** - product or option set is visible to your customers\
**Product image** - [*Read image guide*](https://docs.appclay.com/product-configurator/image-guide)\
**Scene** - [*Read image guide*](https://docs.appclay.com/product-configurator/image-guide)\
**Option set** - see image below

![](/files/-LlWE5t-Cj43T9iLdeD6)

**Option** - see image below

![](/files/-LlWEGv1ttNwGPgDjZKv)

**Z-Index** - [*Read z-index guide*](https://docs.appclay.com/product-configurator/z-index-sorting)\
**Multiple selections** - multiple options can be selected in this option set\
**Mandatory** -  at least one option must be selected in this option set\
**Selected by default** - this option will be selected by default\
**Thumbnail image** - [*Read image guide*](https://docs.appclay.com/product-configurator/image-guide)\
**Layer image** - [*Read image guide*](https://docs.appclay.com/product-configurator/image-guide)


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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.