Creating a system configuration file (system.xml)
The system.xml file is essentially the Stores | Configuration interface builder. Entries we define in our module's system.xml file will render certain parts of the Stores | Configuration interface under the Magento admin area.
Unlike the previous two XML files, this configuration file is located under an additional subfolder, so its full path goes like app/code/Foggyline/Helpdesk/etc/adminhtml/system.xml, with content as follows:
<?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module: Magento_Config:etc/system_file.xsd"> <system> <tab id="foggyline" translate="label" sortOrder="200"> <label>Foggyline</label> </tab> <section ...
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