mplitude
<br><br>
    (2) <tt>tdf_gaussian</tt>
<br><br>
 <tt>%TDFunctions
 <br>&nbsp;&nbsp; "function-name" | tdf_gaussian | amplitude | tau0 | t0
 <br>%</tt>
<br><br>
 The function is a Gaussian:
<br><br>
 <math> f(t) = F_0 exp( - (t-t_0)/(2\tau_0^2) ) </math>
<br><br>
 <math>F_0</math> = amplitude.
<br><br>
    (3) <tt>tdf_cosinoidal</tt>
<br><br>
 <tt>%TDFunctions
 <br>&nbsp;&nbsp; "function-name" | tdf_cosinoidal | amplitude | tau0 | t0
 <br>%</tt>
<br><br>
 <math> f(t) =  F_0 cos( \pi/2 \frac{t-2\tau_