- <para>If the <literal>session</literal> parameter of
- any of these functions is passed as NULL the operation
- is executed for the session the calling process is a
- member of, if there is any.</para>
+ <para><function>sd_session_get_remote_host()</function>
+ may be used to determine the remote hostname of the
+ session identified by the specified session
+ identifier. The returned string needs to be
+ freed with the libc
+ <citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ call after use.</para>
+
+ <para><function>sd_session_get_remote_user()</function>
+ may be used to determine the remote username of the
+ session identified by the specified session
+ identifier. The returned string needs to be
+ freed with the libc
+ <citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ call after use. Note that this value is rarely known
+ to the system, and even then should not be relied on.</para>
+
+ <para><function>sd_session_get_tty()</function>
+ may be used to determine the TTY device of the
+ session identified by the specified session
+ identifier. The returned string needs to be
+ freed with the libc
+ <citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ call after use.</para>
+
+ <para><function>sd_session_get_vt()</function>
+ may be used to determine the VT number of the
+ session identified by the specified session
+ identifier. This function will return an error if
+ the seat does not support VTs.</para>
+
+ <para>If the <varname>session</varname> parameter of
+ any of these functions is passed as
+ <constant>NULL</constant>, the operation is executed
+ for the session the calling process is a member of, if
+ there is any.</para>