Lenco L-174 Manual Del Usuario página 19

Align Tracks... - All the Align functions work on whole tracks or groups of
tracks, not on selections, even if they span across multiple tracks. They all
operate by time-shifting tracks (moving them left or right), making it easier
to synchronize tracks or get rid of silence at the beginning. The cursor or
selection stays in the same place unless you use "Align and move
cursor...", below:
Align and move cursor... - same as the functions above, except that the
cursor or selection is moved along with the tracks. That allows you to shift
the tracks without losing your relative place.
Add Label at Selection - This menu item lets you create a new label at
the current selection. You can title the label by typing with the keyboard
and then hitting "Enter" when you're done.
Add Label at Playback Position - This menu item lets you create a new
label at the current location where you are playing or recording. Do this if
you want to mark a certain passage while you're listening to it. You can title
the label by typing with the keyboard and then hitting "Enter" or "Return"
when you're done. Only available whilst audacity is playing.
Generate Menu
If you choose an item from the Generate menu when there are no tracks in
a project, a new track is created. Otherwise, the current track is used.
If a track is selected and the cursor is placed in a single place in the track
audio is inserted at the cursor position. The default duration is 30 seconds.
The audio created will replace any selection, otherwise it is inserted into
the track, shifting up later parts of the track.
Silence - inserts silence
Tone... - you can create a Sine wave, Square wave, or Saw tooth wave.
White Noise - inserts random audio samples, which sounds like pure static.
Any items which appear after these three built-ins are VST, Ladspa, or
Nyquist plug-ins. It is possible for a poorly written plug-in to crash Audacity,
so always save your work before using a plug-in. Note that any effect that
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