-<dt>Timecode</dt>
-<dd>Time is shown as Hours:Minutes:Seconds:Frames, measured from the timecode zero point on the timeline (which may or may not correspond to the session start and/or absolute zero on the timeline). The frames per second (FPS) value is dictated by either the session FPS setting, or, if slaved to an external timecode master, the master. In the transport clocks, the FPS value is shown below the time display, along with an indication of the current timecode source (INT means that Ardour is its own timecode source)</dd>
-<dt>BBT</dt>
-<dd>Time is shown as Bars:Beats:Ticks, indicating musical time measured from the start of the session. The transport clocks show the current tempo (as bpm) and meter below the time display</dd>
-<dt>Minutes:Seconds</dt>
-<dd>Time is shown as Hours:Minutes:Seconds.Milliseconds, measured from the absolute start of the timeline (ignoring the session start and any timecode offsets).</dd>
-<dt>Samples</dt>
-<dd>Time is shown as a sample count from the absolute start of the timeline (ignoring the session start and any timecode offsets). The number of samples per second is given by the current sample rate, and in the transport clocks, this rate is shown below the time display along with any pullup/pulldown adjustment.</dd>
+ <dt>Timecode</dt>
+ <dd>Time is shown as <dfn><abbr title="Society of Motion Picture and Television
+ Engineers">SMPTE</abbr> timecode</dfn> in Hours:Minutes:Seconds:Frames,
+ measured from the timecode zero point on the timeline (which may not
+ correspond to the session start and/or absolute zero on the timeline,
+ depending on configurable timecode offsets).
+ The frames value is dictated by either the session <abbr title="Frames Per
+ Second">FPS</abbr> setting, or, if slaved to an external timecode master,
+ the master's setting. In the transport clocks, the FPS value is shown below
+ the time display, along with an indication of the current timecode source
+ (<samp>INT</samp> means that Ardour is its own timecode source).</dd>
+ <dt>BBT</dt>
+ <dd>Time is shown as Bars:Beats:Ticks, indicating <dfn>musical time</dfn> measured
+ from the start of the session. The transport clocks show the current tempo
+ in <abbr title="Beats Per Minute">bpm</abbr> and meter below the time
+ display.</dd>
+ <dt>Minutes:Seconds</dt>
+ <dd>Time is shown as Hours:Minutes:Seconds.Milliseconds, measured from the
+ absolute start of the timeline (ignoring the session start and any timecode
+ offsets).</dd>
+ <dt>Samples</dt>
+ <dd>Time is shown as a <dfn>sample count</dfn> from the absolute start of the timeline
+ (ignoring the session start and any timecode offsets). The number of
+ samples per second is given by the current sample rate, and in the transport
+ clocks, this rate is shown below the time display along with any
+ pullup/pulldown adjustment.</dd>