What's the best way to add separators to the settings?

I see that some apps have some kind of separator in their settings. What's the best way to add such separator?
I'll need multiple separators and of course my goal is to add as few bytes to the code as possible (I know it'll add some for each).

<!-- I'd like the 1st separator here with the text: @Strings.settingsSensor1Separator -->

<setting propertyKey="@Properties.s1i" title="@Strings.settingsSensorAntId" prompt="@Strings.settingsSensorAntIdPrompt">
  <settingConfig type="numeric" min="0" max="65536"/>
</setting>
<setting propertyKey="@Properties.s1n" title="@Strings.settingsSensorName">
  <settingConfig type="alphaNumeric" maxLength="12"/>
</setting>

<!-- I'd like the 2nd separator here with the text: @Strings.settingsSensor2Separator -->

<setting propertyKey="@Properties.s2i" title="@Strings.settingsSensorAntId" prompt="@Strings.settingsSensorAntIdPrompt">
  <settingConfig type="numeric" min="0" max="65536"/>
</setting>
<setting propertyKey="@Properties.s2n" title="@Strings.settingsSensorName">
  <settingConfig type="alphaNumeric" maxLength="12"/>
</setting>