Index: sansmodels/src/sans/models/media/model_functions.html
===================================================================
--- sansmodels/src/sans/models/media/model_functions.html	(revision 28c9e5a0a388f167cdc259d5d2d35bbe03416fc0)
+++ sansmodels/src/sans/models/media/model_functions.html	(revision 27f1ddb6c5bd3c9ac7bdc2e346982da76c3988ae)
@@ -508,5 +508,9 @@
  <li class=MsoNormal style='line-height:115%'><a href="#Model"><b>Customized
      Models</b></a>: <a href="#A+Bcos(2x)+Csin(2x)">A+Bcos(2x)+Csin(2x)</a>, <a
-     href="#sinpoly_poly">sin(poly)/(poly)</a>, <a href="#Sum[P1(Cyl), P2(PEV)]">Sum[P1(Cyl), P2(PEV)]</a>, <a href="#ReflectivityModel">ReflectivityModel</a>,
+     href="#sinpoly_poly">sin(poly)/(poly)</a>, <a href="#CM+PEV">CM+PEV</a>, 
+     <a href="#A*CM+(1-A)*PEV">A*CM+(1-A)*PEV</a>,
+          <a href="#polynomial5">polynomial5</a>,
+               <a href="#C*sph_jn(Ax+B)+D">C*sph_jn(Ax+B)+D</a>,
+      <a href="#ReflectivityModel">ReflectivityModel</a>,
      <a href="#ReflectivityIIModel">ReflectivityIIModel</a>.</li>
  <li class=MsoNormal style='line-height:115%'><a href="#Structure_Factors"><b>Structure
@@ -2882,5 +2886,5 @@
 
 <p class=MsoNormal>Once the <i><span style='font-family:Symbol'>r</span><sub>inter_i</sub></i>
-is found at the boundary of the sub-layer of the interface, we can find the its
+is found at the boundary of the sub-layer of the interface, we can find its
 contribution to the form factor P(q);</p>
 
@@ -14026,5 +14030,5 @@
 <p class=MsoListParagraph style='margin-left:.55in;text-indent:-.3in'><b><span
 style='font-size:14.0pt'>4.3.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-</span></b><a name="Sum[P1(Cyl), P2(PEV)]"><b><span style='font-size:14.0pt'>Sum[P1(Cyl), P2(PEV)]
+</span></b><a name="CM+PEV"><b><span style='font-size:14.0pt'>CM+PEV
 </span></b></a></p>
 
@@ -14033,6 +14037,6 @@
 <p class=MsoNormal>This function, as an example of a user defined function,
 calculates the intensity =&nbsp; scale_factor * (CylinderModel + PolymerExclVolume model).
-To make your own sum(P1+P2) model, modify and save the file named 'sum_p1_p2.py' in the SansView/plugins/ folder 
-by changing the model names in the 'from' and 'import' statement, and the self.name if desired. It works only for single functional models.
+To make your own sum(P1+P2) model, select 'Easy Custom Sum' from the Fitting menu, or modify and compile the file named 'sum_p1_p2.py' from 'Edit Custom Model' in the 'Fitting' menu.
+ It works only for single functional models.
 </p>
 <p class=MsoNormal>&nbsp;</p>
@@ -14042,4 +14046,48 @@
 <p class=MsoListParagraph style='margin-left:.55in;text-indent:-.3in'><b><span
 style='font-size:14.0pt'>4.4.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+</span></b><a name="A*CM+(1-A)*PEV"><b><span style='font-size:14.0pt'>A*CM+(1-A)*PEV
+</span></b></a></p>
+
+<p class=MsoNormal><b>&nbsp;</b></p>
+
+<p class=MsoNormal>This function, as an example of a user defined function,
+calculates the intensity =&nbsp; (scale_factor * CylinderModel + (1-scale_factor) * PolymerExclVolume model).
+To make your own A*p1+(1-A)*p2 model, modify and compile the file named 'sum_Ap1_1_Ap2.py' from 'Edit Custom Model' in the 'Fitting' menu. It works only for single functional models.
+</p>
+<p class=MsoNormal>&nbsp;</p>
+
+<p class=MsoNormal>&nbsp;</p>
+
+<p class=MsoListParagraph style='margin-left:.55in;text-indent:-.3in'><b><span
+style='font-size:14.0pt'>4.5.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+</span></b><a name="polynomial5"><b><span style='font-size:14.0pt'>polynomial5
+</span></b></a></p>
+
+<p class=MsoNormal><b>&nbsp;</b></p>
+
+<p class=MsoNormal>This function, as an example of a user defined function,
+calculates the intensity =&nbsp; A + Bq + Cq<sup>2</sup>
++ Dq<sup>3 </sup>+ Eq<sup>4</sup> + Fq<sup>5</sup>.
+This model can be modified and compiled from 'Edit Custom Model' in the 'Fitting' menu.
+</p>
+<p class=MsoNormal>&nbsp;</p>
+
+<p class=MsoNormal>&nbsp;</p>
+<p class=MsoListParagraph style='margin-left:.55in;text-indent:-.3in'><b><span
+style='font-size:14.0pt'>4.6.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+</span></b><a name="C*sph_jn(Ax+B)+D"><b><span style='font-size:14.0pt'>C*sph_jn(Ax+B)+D
+</span></b></a></p>
+
+<p class=MsoNormal><b>&nbsp;</b></p>
+
+<p class=MsoNormal>This function, as an example of a user defined function,
+calculates the intensity =&nbsp; C*sph_jn(Ax+B)+D where the sph_jn is spherical Bessel function of the order n.
+This model can be modified and compiled from 'Edit Custom Model' in the 'Fitting' menu.
+</p>
+<p class=MsoNormal>&nbsp;</p>
+
+<p class=MsoNormal>&nbsp;</p>
+<p class=MsoListParagraph style='margin-left:.55in;text-indent:-.3in'><b><span
+style='font-size:14.0pt'>4.7.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span></b><a name=ReflectivityModel><b><span style='font-size:14.0pt'>ReflectivityModel</span></b></a></p>
 
@@ -14083,5 +14131,5 @@
 
 <p class=MsoListParagraph style='margin-left:.55in;text-indent:-.3in'><b><span
-style='font-size:14.0pt'>4.5.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+style='font-size:14.0pt'>4.8.</span></b><b><span style='font-size:7.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span></b><a name=ReflectivityIIModel><b><span style='font-size:14.0pt'>ReflectivityIIModel</span></b></a></p>
 
