OpenScreen. Open screen.
Request
<?xml version="1.0" encoding="utf-8"?>
<sdk guid="##GUID">
</sdk>
<!--
Description:
1. Sdk.guid is the guid value obtained through the negotiation of the SDK protocol version.
-->
Respond
<?xml version="1.0" encoding="utf-8"?>
<sdk guid="##GUID">
<out method="OpenScreen" result="##result"/>
</sdk>
<!--
Description:
1. Sdk.guid is the guid value obtained through the negotiation
of the SDK protocol version.
2. out.method = "OpenScreen"
3. out.result
: (The error code refers to ErrorCode
-->