handle: session Open(in string contents, in int readOnly, in int mapped, in int shareLevel, in string initialPos, out string viewID) => start;
handle: session Open(in string contents, in int readOnly, in int mapped, in int shareLevel, in string initialPos, in string viewID);
handle: session Open(in string contents, in int readOnly, in int mapped, in int shareLevel, in string initialPos, out string viewID, in string filename) => start;
handle: session Open(in string contents, in int readOnly, in int mapped, in int shareLevel, in string initialPos, in string viewID, in string filename);