这是什么意思?
allowExeDefinition="MachineToLocalUser"
<sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=99999999999" >
<section name="MyApp.My.MySettings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=99999999999" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
</sectionGroup>