<p><b>@aabadie</b> requested changes on this pull request.</p>

<p>Just minor comments on documentation</p><hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11527#discussion_r293288897">drivers/include/periph/wdt.h</a>:</p>
<pre style='color:#555'>> + * |----------------------------------------------------|
+ *
+ *                           x(ms)
+ * |---------------------------| - - - - - - -  - - - - |
+ *
+ *                             ^
+ *                             |
+ *                        wdt_kick()
+ * 
+ * WINDOWED operation
+ * ==================
+ *
+ *    wdt_setup_reboot(MIN_TIME, MAX_TIME);
+ *    wdt_start();
+ *
+ *    // x < (MAX_TIME - MIN_TIME)
</pre>
<p>Please use C style comments also in documentation.</p>
<p>I think code snippet must be in specific code blocks:</p>
<pre><code>'''c
/* C code (replace ticks by back ticks) */
'''
</code></pre>

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