Therefore submission of a job to the WMS is the only synchronous event
logging that does not return until the job is successfully registered with
the \LB server.
+Moreover, the initial registration is sent by the \LB client library in
+parallel to \LB proxy (Sect.~\ref{s:proxy}) and \LB server.
+
+On the other hand, even the registration event may carry large data
+(e.g. JDL of huge job collection). Therefore
+also an additional asychronous variant is used, causing two job registration
+events appear typically.
% explicitní -- user tagy, ACL
However, the user may also store information into the \LB explicitly
% asi nepotrebujeme \subsubsection{Clients}
\subsubsection{Proxy}
+\label{s:proxy}
\emph{\LB proxy} is the implementation of the concept of local view on job state (see
\ifx\insideUG\undefined{\cite{lbug}}\else{Sect.~\ref{local}}\fi). Since