``i2c-2`` is an I2C bus whose number is 2, and ``2-0049`` is an I2C device
on bus 2 address 0x49 bound with a kernel driver.
-Terminologies
-=============
+Terminology
+===========
-First, let us define a couple of terminologies to avoid confusions in the later
-sections.
+First, let us define some terms to avoid confusion in later sections.
(Physical) I2C Bus Controller
-----------------------------
For the following content, we will use a more complex I2C topology as an
example. Here is a brief graph for the I2C topology. If you do not understand
-this graph at the first glance, do not be afraid to continue reading this doc
+this graph at first glance, do not be afraid to continue reading this doc
and review it when you finish reading.
::