slides/sysdev-bootloaders-u-boot: make command args more salient

Make it easier to distinguish raw storage command arguments without any
further explanation.

Signed-off-by: Nasser Afshin <[email protected]>
Reviewed-by: Michael Opdenacker <[email protected]>

slides/sysdev-bootloaders-u-boot/sysdev-bootloaders-u-boot.tex

@@ -518,16 +518,16 @@ \subsection{The U-boot bootloader}
     \item NAND flash
       \begin{itemize}
       \item \code{nand info}
-      \item \code{nand read addr off|partition size}
-      \item \code{nand erase off size}
-      \item \code{nand write addr off|partition size}
+      \item \code{nand read <addr> <off|partition> <size>}
+      \item \code{nand erase [<off> [<size>]]}
+      \item \code{nand write <addr> <off|partition> <size>}
       \item More: \code{help nand}
       \end{itemize}
     \item MMC
       \begin{itemize}
       \item \code{mmc info}
-      \item \codewithhash{mmc read addr blk\# cnt}
-      \item \codewithhash{mmc write addr blk\# cnt}
+      \item \codewithhash{mmc read <addr> <blk\#> <cnt>}
+      \item \codewithhash{mmc write <addr> <blk\#> <cnt>}
       \item \code{mmc part} to show partition table
       \item \code{mmc dev} to show/set current MMC device
       \item More: \code{help mmc}
@@ -539,16 +539,16 @@ \subsection{The U-boot bootloader}
     \item USB storage
       \begin{itemize}
       \item \code{usb info}
-      \item \codewithhash{usb read addr blk\# cnt}
-      \item \codewithhash{usb write addr blk\# cnt}
+      \item \codewithhash{usb read <addr> <blk\#> <cnt>}
+      \item \codewithhash{usb write <addr> <blk\#> <cnt>}
       \item \code{usb part}
       \item \code{usb dev}
       \item More: \code{help usb}
       \end{itemize}
     \end{itemize}
+    Note: \code{addr} are addresses in RAM where data is stored
   \end{columns}
   \vspace{0.2cm}
-  Note: \code{addr} are addresses in RAM where data is stored
 \end{frame}
 
 \begin{frame}[fragile]{U-Boot commands example}