The page is available only when the PHP plugin is enabled.
The plugin is not bundled with IntelliJ IDEA, but it can be installed from the JetBrains plugin repository as described in Installing, Updating and Uninstalling Repository Plugins and Enabling and Disabling Plugins. Once enabled, the plugin is available at the IDE level, that is, you can use it in all your IntelliJ IDEA projects.
Use this dialog box to specify the delimiters to enclose Smarty tags in.
|Smarty left delimiter||In this text box, specify the desired opening delimiter. By default, the field shows the opening curly brace
|Smarty right delimiter||In this text box, specify the desired closing delimiter. By default, the field shows the closing curly brace
|Use Smarty 3 whitespace policy||When this check box is selected, delimiters followed by whitespace will not be parsed as template tags.
The check box is available when Smarty 3.0 or higher is used.