--- /dev/null
+Functionality of extended file system:
+
+- Test directory support.
+
+1 dir-mkdir
+2 dir-mk-vine
+3 dir-mk-tree
+
+1 dir-rmdir
+2 dir-rm-vine
+3 dir-rm-tree
+
+1 dir-lsdir
+
+- Test file growth.
+
+1 grow-create
+1 grow-seq-sm
+2 grow-seq-lg
+2 grow-sparse
+3 grow-two-files
+1 grow-tell
+1 grow-file-size
+
+- Test directory growth.
+
+1 grow-dir-lg
+1 grow-root-sm
+1 grow-root-lg
+
+- Test writing from multiple processes.
+
+3 syn-rw