Change bold code snippets to inline code blocks

03-09.md

@@ -124,31 +124,31 @@ the result is 72,544 µs, or about 3.63 µs per load of AL from memory.
 This is just slightly longer than the time per load of AL measured by
 the precision Zen timer, as we would expect given that interrupts are
 left enabled by the long-period Zen timer. The extra fraction of a
-microsecond measured per **MOV** reflects the time required to execute
+microsecond measured per `MOV` reflects the time required to execute
 the BIOS code that handles the 18.2 timer interrupts that occur each
 second.
 
 Note that the command can take as much as 10 minutes to finish on a slow
 PC if you are using MASM, with most of that time spent assembling
 Listing 3.8. Why? Because MASM is notoriously slow at assembling
-**REPT** blocks, and the block in Listing 3.8 is repeated 20,000 times.
+`REPT` blocks, and the block in Listing 3.8 is repeated 20,000 times.
 
 ### Using the Zen Timer from C {#Heading15}
 
 The Zen timer can be used to measure code performance when programming
 in C—but not right out of the box. As presented earlier, the timer is
 designed to be called from assembly language; some relatively minor
-modifications are required before the **ZTimerOn** (start timer),
-**ZTimerOff** (stop timer), and **ZTimerReport** (display timing
+modifications are required before the `ZTimerOn` (start timer),
+`ZTimerOff` (stop timer), and `ZTimerReport` (display timing
 results) routines can be called from C. There are two separate cases to
 be dealt with here: small code model and large; I'll tackle the simpler
 one, the small code model, first.
 
 Altering the Zen timer for linking to a small code model C program
-involves the following steps: **C** hange **ZTimerOn** to
-**\_ZTimerOn**, change **ZTimerOff** to **\_ZTimerOff**, change
-**ZTimerReport** to **\_ZTimerReport**, and change **Code** to
-**\_TEXT** . Figure 3.2 shows the line numbers and new states of all
+involves the following steps: `C` hange `ZTimerOn` to
+`_ZTimerOn`, change `ZTimerOff` to `_ZTimerOff`, change
+`ZTimerReport` to `_ZTimerReport`, and change `Code` to
+`_TEXT` . Figure 3.2 shows the line numbers and new states of all
 lines from Listing 3.1 that must be changed. These changes convert the
 code to use C-style external label names and the small model C code
 segment. (In C++, use the "C" specifier, as in