What does “canRestore” attribute mean in system.xml?

Question

Maybe someone already saw an <field> attribute canRestore="1":

[...]
<field id="provider"
       translate="label"
       type="text"
       sortOrder="100"
       canRestore="1"
       showInDefault="1">
    <label>Provider</label>
</field>
[...]

Any ideas what does it mean?

Answer 1

You can show Use system value check-box to system configuration by canRestore="1" property in system.xml

Answer 2

In your config.xml file, you can specify default values for the admin configuration form that you created in system.xml. If a user manually entered a value in one of those fields, they can reset the field to the default value that you specified in config.xml.