inputs.
To query and change tuner properties applications use the
-:ref:`VIDIOC_G_TUNER` and
+:ref:`VIDIOC_G_TUNER <VIDIOC_G_TUNER>` and
:ref:`VIDIOC_S_TUNER <VIDIOC_G_TUNER>` ioctls, respectively. The
-struct :ref:`v4l2_tuner <v4l2-tuner>` returned by :ref:`VIDIOC_G_TUNER`
+struct :ref:`v4l2_tuner <v4l2-tuner>` returned by :ref:`VIDIOC_G_TUNER <VIDIOC_G_TUNER>`
also contains signal status information applicable when the tuner of the
current video or radio input is queried. Note that :ref:`VIDIOC_S_TUNER <VIDIOC_G_TUNER>`
does not switch the current tuner, when there is more than one at all.
cannot specify whether the frequency is for a tuner or a modulator.
To query and change modulator properties applications use the
-:ref:`VIDIOC_G_MODULATOR` and
+:ref:`VIDIOC_G_MODULATOR <VIDIOC_G_MODULATOR>` and
:ref:`VIDIOC_S_MODULATOR <VIDIOC_G_MODULATOR>` ioctl. Note that
:ref:`VIDIOC_S_MODULATOR <VIDIOC_G_MODULATOR>` does not switch the current modulator, when there
is more than one at all. The modulator is solely determined by the
===============
To get and set the tuner or modulator radio frequency applications use
-the :ref:`VIDIOC_G_FREQUENCY` and
+the :ref:`VIDIOC_G_FREQUENCY <VIDIOC_G_FREQUENCY>` and
:ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl which both take
a pointer to a struct :ref:`v4l2_frequency <v4l2-frequency>`. These
ioctls are used for TV and radio devices alike. Drivers must support