Level attribute in Microsoft365 configuration XML

Question

I wanted to know what the level attribute in the display tag in the configuration xml i generated in the Office customization tool refers to

<Configuration ID="a85d8770-944a-492d-bce1-f7c2c71337a0">
  <Add OfficeClientEdition="64" Channel="SemiAnnualPreview" MigrateArch="TRUE">
    <Product ID="O365ProPlusRetail">
      <Language ID="en-gb" />
      <ExcludeApp ID="Groove" />
      <ExcludeApp ID="Lync" />
    </Product>
  </Add>
  <Updates Enabled="TRUE" />
  <RemoveMSI />
  <AppSettings>
    <User Key="software\microsoft\office\16.0\excel\options" Name="defaultformat" Value="51" Type="REG_DWORD" App="excel16" Id="L_SaveExcelfilesas" />
    <User Key="software\microsoft\office\16.0\powerpoint\options" Name="defaultformat" Value="27" Type="REG_DWORD" App="ppt16" Id="L_SavePowerPointfilesas" />
    <User Key="software\microsoft\office\16.0\word\options" Name="defaultformat" Value="" Type="REG_SZ" App="word16" Id="L_SaveWordfilesas" />
  </AppSettings>
  <Display Level="Full" AcceptEULA="TRUE" />
</Configuration>