effects are separate per-bus and the remaining are applied
after the mix. (More on this below.) The mastering section begins
with a **limiter**, basically a compressor with very high ratio.
-It's there as an emergency brake for really loud compressors
+It's there as an emergency brake for really loud sounds
that got through the other compressors—a classic example is a
speaker suddenly coughing, or a very loud bass drum. This prevents
both clipping and blowing out the speakers' ears.
you can use the + button to add a new bus, and the - button to remove
the currently selected one (you select by clicking on it). The up and
down buttons rearrange the order by moving the currently selected bus
-up or down, if possible.
+up or down, if possible. Note that you can create a mono bus by
+assigning the same input channel to the left and right inputs.
Because mappings can be tedious to setup, you wouldn't want to set up
a complicated one every time you started Nageru. Therefore, mappings
go all silent.
Then there's the **peak meter** to the left of that. For each bus, unlike
-for the meters used for mastering (see :ref:`audio meters`),
+for the meters used for mastering (see :ref:`audio-meters`),
you don't want to know loudness; you want to know recording levels,
so this is a peak meter, *not* a loudness meter. (There's some holdoff
so you can see the actual peaks over a short period.) In particular,