forward-button in page-tree in my typo3 backend

Question

can you explain me this button in my typo3 backend-page-tree:

It looks like a forward-button. How can I make it disappear in the page-settings?

Thank you, Chris

Answer 1

在页面属性的“ Access选项卡上，您将选中“ Extend to Subpages复选框时，它会出现。