Add parameter M/z tolerance to the help file.
<li><b>Retention time range</b> (minutes) is the maximum allowed retention time difference between aligned compounds
from different samples.</li>
+
+ <li><b>M/z tolerance</b> is the maximum m/z difference, when two peaks from different mass spectra are considered
+ equal.</li>
+
<li><b>Score threshold</b> (number between 0 and 1) is the minimum value of the similarity function S(C<sub>1</sub>,
C<sub>2</sub>) required for compounds to be aligned together.
</li>
