Pro Tools allows you to redraw waveforms by altering audio files on the sample level. This is particularly useful for repairing vocal plosives, pops, or clicks in the track. Be careful when using this tool, though; redrawing a waveform permanently alters the audio file on your hard drive once it’s saved (in other words, it’s destructive editing), so make a backup of the original file before editing.
When repairing a waveform by redrawing, try to keep the same basic form of the sound wave or you might create an even nastier sound than the pop or click you were trying to fix. On the other hand, you can create some wacky effects while editing on the sample level. Experiment with your waveform drawing technique…and remember; you can always undo your edits before saving.