Added a comment: pseudocode

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+[[!comment format=mdwn
+ username="https://www.google.com/accounts/o8/id?id=AItOawmicVKRM8vJX4wPuAwlLEoS2cjmFXQkjkE"
+ nickname="Thomas"
+ subject="pseudocode"
+ date="2013-12-08T15:23:36Z"
+ content="""
+The implementation should really be nothing more than the following to be run from a regular git annex repository with a configures special plain directory remote:
+
+    foreach(path : allAnnexedFiles) {
+      if(remote.exists(path) && remote.filesize(path) === expectedFilesize) goto finally;
+    
+      if(fileAvailableLocally(path)) {
+        copyFileToRemote(path);
+        goto finally;
+      }
+
+      if(shouldCopyFromElsewhere && canCopyFileFromSomeOtherRemote(path)) {
+        copyFileFromSomeOtherRemoteToRemote(path);
+      }
+
+      finally: 
+        logThatFileExistsOnRemote(path);
+    }
+    
+    foreach(remotePath : filesInRemoteDir) {
+      if(fileIsAnnexed(remotePath) || fileIsIgnored(remotePath) continue;
+    
+      delete(remotePath);
+    }
+
+The above pseude code assumes
+- that the no other process is working on the remote at the same time.
+- that the remote is not trusted.
+- that nobody expects changes done at the remote to propagate to other clones.
+"""]]