Index: sansmodels/src/sans/models/c_extensions/Hardsphere.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/Hardsphere.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/Hardsphere.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -15,15 +15,15 @@
  //
  //						R: radius of the Hardsphere particle
- //						V:The volume fraction 
+ //						V:The volume fraction
  //
- //    Ref: Percus., J. K.,etc., J. Phy. Rev. 
+ //    Ref: Percus., J. K.,etc., J. Phy. Rev.
  //    1958, 110, 1.
  //	 </text>
- //[FIXED]= radius.width  
+ //[FIXED]= radius.width
 
 
 typedef struct {
-    /// Radius of hardsphere [A]
-    //  [DEFAULT]=radius=50.0 A
+    /// Radius of hardsphere [Å]
+    //  [DEFAULT]=radius=50.0 [Å]
     double radius;
 
Index: sansmodels/src/sans/models/c_extensions/HayterMSA.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/HayterMSA.h	(revision 25579e8c451417db52ac6ed70a3c116d52d8717d)
+++ sansmodels/src/sans/models/c_extensions/HayterMSA.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -7,23 +7,23 @@
  //[PYTHONCLASS] = HayterMSAStructure
  //[DISP_PARAMS] = radius
- //[DESCRIPTION] =<text>To calculate the structure factor (the Fourier transform   
- //                     of the pair correlation function g(r)) for 
- //                     a system of charged, spheroidal objects in    
- //                     a dielectric medium. When combined with an 
- //                     appropriate form factor, this allows 
- //                     for inclusion of the interparticle 
- //                     interference effects due to screened coulomb 
+ //[DESCRIPTION] =<text>To calculate the structure factor (the Fourier transform
+ //                     of the pair correlation function g(r)) for
+ //                     a system of charged, spheroidal objects in
+ //                     a dielectric medium. When combined with an
+ //                     appropriate form factor, this allows
+ //                     for inclusion of the interparticle
+ //                     interference effects due to screened coulomb
  //                     repulsion between charged particles.
  //                     (note: charge > 0 required.)
  //
- //                     Ref: JP Hansen and JB Hayter, Molecular 
+ //                     Ref: JP Hansen and JB Hayter, Molecular
  //                           Physics 46, 651-656 (1982).
  //
  //				</text>
- //[FIXED]= radius.width  
- 
+ //[FIXED]= radius.width
+
 typedef struct {
-    ///	Radius of particle [A]
-    //  [DEFAULT]=radius=20.75 A
+    ///	Radius of particle [Å]
+    //  [DEFAULT]=radius=20.75 [Å]
     double radius;
 
@@ -37,13 +37,13 @@
 
 	///	Temperature [K]
-    //  [DEFAULT]=temperature= 318.16 K 
+    //  [DEFAULT]=temperature= 318.16 [K]
     double temperature;
 
-	///	Monovalent salt concentration [M] 
-    //  [DEFAULT]=saltconc= 0 
+	///	Monovalent salt concentration [M]
+    //  [DEFAULT]=saltconc= 0 [M]
     double saltconc;
 
-    ///	Dielectric constant of solvent 
-    //  [DEFAULT]=dielectconst= 71.08 
+    ///	Dielectric constant of solvent
+    //  [DEFAULT]=dielectconst= 71.08
     double dielectconst;
 } HayterMSAParameters;
Index: sansmodels/src/sans/models/c_extensions/SquareWell.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/SquareWell.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/SquareWell.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -18,14 +18,14 @@
 //		w: well width; multiples of the particle diameter
 //
-//		Ref: Sharma, R. V.; Sharma, K. C., Physica, 
+//		Ref: Sharma, R. V.; Sharma, K. C., Physica,
 //            1977, 89A, 213.
 //   			</text>
-//   [FIXED]= radius.width 
+//   [FIXED]= radius.width
 //[ORIENTATION_PARAMS]= <text> </text>
 
 
 typedef struct {
-    ///	Radius of particle [A]
-    //  [DEFAULT]=radius=50.0 A
+    ///	Radius of particle [Å]
+    //  [DEFAULT]=radius=50.0 [Å]
     double radius;
 
@@ -35,9 +35,9 @@
 
     ///	Well depth [kT]
-    //  [DEFAULT]=welldepth= 1.50 kT
+    //  [DEFAULT]=welldepth= 1.50 [kT]
     double welldepth;
 
-    ///	Well width 
-    //  [DEFAULT]=wellwidth= 1.20 
+    ///	Well width
+    //  [DEFAULT]=wellwidth= 1.20
     double wellwidth;
 
Index: sansmodels/src/sans/models/c_extensions/StickyHS.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/StickyHS.h	(revision 25579e8c451417db52ac6ed70a3c116d52d8717d)
+++ sansmodels/src/sans/models/c_extensions/StickyHS.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -15,5 +15,5 @@
  //                         = 0   , r >= 2R +w
  //
- //						R: radius of the hardsphere 
+ //						R: radius of the hardsphere
  //                     stickiness = [exp(Uo/kT)]/(12*perturb)
  //                     perturb = w/(w+ 2R) , 0.01 =< w <= 0.1
@@ -21,11 +21,11 @@
  //						v: The volume fraction , v > 0
  //
- //                     Ref: Menon, S. V. G.,et.al., J. Chem. Phys., 
+ //                     Ref: Menon, S. V. G.,et.al., J. Chem. Phys.,
  //                          1991, 95(12), 9186-9190.
  //				</text>
- //[FIXED]= radius.width  
+ //[FIXED]= radius.width
 typedef struct {
-    /// Radius of hardsphere [A]
-    //  [DEFAULT]=radius=50.0 A
+    /// Radius of hardsphere [Å]
+    //  [DEFAULT]=radius=50.0 [Å]
     double radius;
 
Index: sansmodels/src/sans/models/c_extensions/core_shell.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/core_shell.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/core_shell.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -7,14 +7,14 @@
  //[PYTHONCLASS] = CoreShellModel
  //[DISP_PARAMS] = radius, thickness
- //[DESCRIPTION] =<text> Form factor for a monodisperse spherical
- //                         particle with a core-shell structure:
- //                       The form factor is normalized by the 
- //                        total particle volume.
- // 
- //						radius: core radius
- //                     thickness: shell thickness
+ //[DESCRIPTION] =<text> Form factor for a monodisperse spherical particle with
+ //    particle with a core-shell structure:
+ //    The form factor is normalized by the
+ //    total particle volume.
  //
- //                     Ref: Guinier, A. and G. Fournet, 
- //                          John Wiley and Sons, New York, 1955.
+ //		radius: core radius
+ //     thickness: shell thickness
+ //
+ //     Ref: Guinier, A. and G. Fournet,
+ //     John Wiley and Sons, New York, 1955.
  //				</text>
  //[FIXED]= <text> thickness.width;radius.width</text>
@@ -25,21 +25,21 @@
     //  [DEFAULT]=scale=1.0
     double scale;
-    ///	Core Radius (A) 60.0
-    //  [DEFAULT]=radius=60.0 A
+    ///	Core Radius [Å] 60.0
+    //  [DEFAULT]=radius=60.0 [Å]
     double radius;
-    /// Shell Thickness (A) 10.0
-    //  [DEFAULT]=thickness=10 A
+    /// Shell Thickness [Å] 10.0
+    //  [DEFAULT]=thickness=10 [Å]
     double thickness;
-    ///	Core SLD (Å-2) 1.0e-6
-    //  [DEFAULT]=core_sld=1.0e-6 A-2
+    ///	Core SLD [1/Å²] 1.0e-6
+    //  [DEFAULT]=core_sld=1.0e-6 [1/Å²]
     double core_sld;
-	/// Shell SLD (Å-2) 2.0e-6
-	//  [DEFAULT]=shell_sld=2.0e-6 A-2
+	/// Shell SLD [1/Å²] 2.0e-6
+	//  [DEFAULT]=shell_sld=2.0e-6 [1/Å²]
 	double shell_sld;
-	/// Solvent SLD (Å-2) 3.0e-6
-	//  [DEFAULT]=solvent_sld=3.0e-6 A-2
+	/// Solvent SLD [1/Å²] 3.0e-6
+	//  [DEFAULT]=solvent_sld=3.0e-6 [1/Å²]
 	double solvent_sld;
-	/// Incoherent Background (cm-1) 0.000
-	//  [DEFAULT]=background=0 cm-1
+	/// Incoherent Background [1/cm] 0.000
+	//  [DEFAULT]=background=0 [1/cm]
 	double background;
 } CoreShellParameters;
Index: sansmodels/src/sans/models/c_extensions/core_shell_cylinder.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/core_shell_cylinder.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/core_shell_cylinder.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -8,24 +8,26 @@
  //[DISP_PARAMS] = radius, thickness, length, axis_theta, axis_phi
  //[DESCRIPTION] = <text>P(q,alpha)= scale/Vs*f(q)^(2) + bkg  Where:\n\
- //						 f(q)= 2(core_sld- solvant_sld)* Vc*sin[qLcos(alpha/2)]/\n\
- //						[qLcos(alpha/2)]*J1(qRsin(alpha))/[qRsin(alpha)] +\n 2(shell_sld-solvent_sld)*Vs
- //						*sin[q(L+T)cos(alpha/2)]/[[q(L+T)cos(alpha/2)]
- //						*J1(q(R+T)sin(alpha))/q(R+T)sin(alpha)]
- //						alpha:is the angle between the axis of the cylinder and the q-vector
- //						Vs: the volume of the outer shell
- //						Vc: the volume of the core
- //						L: the length of the core
- //    					shell_sld: the scattering length density of the shell
- //						solvent_sld: the scattering length density of the solvent
- //						bkg: the background
- //						T: the thickness
- //    					R+T: is the outer radius
- // 					L+2T: The total length of the outershell
- //						J1: the first order Bessel function
- // 					theta: axis_theta of the cylinder
- // 					phi: the axis_phi of the cylinder
- //					</text>
+ //	 f(q)= 2(core_sld- solvant_sld)* Vc*sin[qLcos(alpha/2)]/\n\
+ //	 [qLcos(alpha/2)]*J1(qRsin(alpha))/[qRsin(alpha)] +\n
+ //  2(shell_sld-solvent_sld)*Vs
+ //	 *sin[q(L+T)cos(alpha/2)]/[[q(L+T)cos(alpha/2)]
+ //	 *J1(q(R+T)sin(alpha))/q(R+T)sin(alpha)]
+ //			alpha:is the angle between the axis of the cylinder
+ //          and the q-vector
+ //			Vs: the volume of the outer shell
+ //			Vc: the volume of the core
+ //			L: the length of the core
+ //    		shell_sld: the scattering length density of the shell
+ //			solvent_sld: the scattering length density of the solvent
+ //			bkg: the background
+ //			T: the thickness
+ //    		R+T: is the outer radius
+ // 		L+2T: The total length of the outershell
+ //			J1: the first order Bessel function
+ // 		theta: axis_theta of the cylinder
+ // 		phi: the axis_phi of the cylinder
+ //		</text>
  //[FIXED]= <text> axis_phi.width; axis_theta.width; length.width;radius.width; thickness_width</text>
- //[ORIENTATION_PARAMS]= axis_phi; axis_theta;axis_phi.width; axis_theta.width 
+ //[ORIENTATION_PARAMS]= axis_phi; axis_theta;axis_phi.width; axis_theta.width
 
 
@@ -35,38 +37,38 @@
     double scale;
 
-    /// Core radius [A]
-    //  [DEFAULT]=radius=20.0 A
+    /// Core radius [Å]
+    //  [DEFAULT]=radius=20.0 [Å]
     double radius;
 
-    /// Shell thickness [A]
-    //  [DEFAULT]=thickness=10.0 A
+    /// Shell thickness [Å]
+    //  [DEFAULT]=thickness=10.0 [Å]
     double thickness;
 
-    /// Core length [A]
-    //  [DEFAULT]=length=400.0 A
+    /// Core length [Å]
+    //  [DEFAULT]=length=400.0 [Å]
     double length;
 
-    /// Core SLD [A-2]
-    //  [DEFAULT]=core_sld=1.0e-6 A-2
+    /// Core SLD [1/Å²]
+    //  [DEFAULT]=core_sld=1.0e-6 [1/Å²]
     double core_sld;
 
-    /// Shell SLD [A-2]
-    //  [DEFAULT]=shell_sld=4.0e-6 A-2
+    /// Shell SLD [1/Å²]
+    //  [DEFAULT]=shell_sld=4.0e-6 [1/Å²]
     double shell_sld;
 
-    /// Solvent SLD [A-2]
-    //  [DEFAULT]=solvent_sld=1.0e-6 A-2
+    /// Solvent SLD [1/Å²]
+    //  [DEFAULT]=solvent_sld=1.0e-6 [1/Å²]
     double solvent_sld;
 
-	/// Incoherent Background [cm-1]
-	//  [DEFAULT]=background=0 cm-1
+	/// Incoherent Background [1/cm]
+	//  [DEFAULT]=background=0 [1/cm]
 	double background;
 
     /// Orientation of the long axis of the core-shell cylinder w/respect incoming beam [rad]
-    //  [DEFAULT]=axis_theta=1.57 rad
+    //  [DEFAULT]=axis_theta=1.57 [rad]
     double axis_theta;
 
     /// Orientation of the long axis of the core-shell cylinder in the plane of the detector [rad]
-    //  [DEFAULT]=axis_phi=0.0 rad
+    //  [DEFAULT]=axis_phi=0.0 [rad]
     double axis_phi;
 
Index: sansmodels/src/sans/models/c_extensions/cylinder.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/cylinder.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/cylinder.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -5,17 +5,19 @@
  * [DISP_PARAMS] = radius, length, cyl_theta, cyl_phi
    [DESCRIPTION] = <text>P(q,alpha)= scale/V*f(q)^(2)+bkg
-						f(q)= 2*(scatter_sld - solvent_sld)*V*sin(qLcos(alpha/2))/[qLcos(alpha/2)]*
-						J1(qRsin(alpha/2))/[qRsin(alpha)]
-						V: Volume of the cylinder
-						R: Radius of the cylinder
-						L: Length of the cylinder
-						J1: The bessel function
-						alpha: angle betweenthe axis of the cylinder and the q-vector
-						for 1D:the ouput is P(q)=scale/V*integral from pi/2 to zero of f(q)^(2)*
-						sin(alpha)*dalpha+ bkg
+				f(q)= 2*(scatter_sld - solvent_sld)*V
+				*sin(qLcos(alpha/2))/[qLcos(alpha/2)]
+				*J1(qRsin(alpha/2))/[qRsin(alpha)]
+				V: Volume of the cylinder
+				R: Radius of the cylinder
+				L: Length of the cylinder
+				J1: The bessel function
+				alpha: angle betweenthe axis of the cylinder
+				and the q-vector for 1D:the ouput is
+				P(q)=scale/V*integral from pi/2 to zero of
+				f(q)^(2)*sin(alpha)*dalpha+ bkg
 					</text>
 	[FIXED]= <text>cyl_phi.width; cyl_theta.width; length.width;radius.width</text>
 	[ORIENTATION_PARAMS]= <text>cyl_phi; cyl_theta; cyl_phi.width; cyl_theta.width</text>
-	
+
 
  **/
@@ -24,23 +26,23 @@
     //  [DEFAULT]=scale=1.0
     double scale;
-    /// Radius of the cylinder [A]
-    //  [DEFAULT]=radius=20.0 A
+    /// Radius of the cylinder [Å]
+    //  [DEFAULT]=radius=20.0 [Å]
     double radius;
-    /// Length of the cylinder [A]
-    //  [DEFAULT]=length=400.0 A
+    /// Length of the cylinder [Å]
+    //  [DEFAULT]=length=400.0 [Å]
     double length;
-    /// Contrast [A-2]
-    //  [DEFAULT]=contrast=3.0e-6 A-2
+    /// Contrast [1/Å²]
+    //  [DEFAULT]=contrast=3.0e-6 [1/Å²]
     double contrast;
-	/// Incoherent Background (cm-1) 0.000
-	//  [DEFAULT]=background=0 cm-1
+	/// Incoherent Background [1/cm] 0.00
+	//  [DEFAULT]=background=0.0 [1/cm]
 	double background;
     /// Orientation of the cylinder axis w/respect incoming beam [rad]
-    //  [DEFAULT]=cyl_theta=1.0 rad
+    //  [DEFAULT]=cyl_theta=1.0 [rad]
     double cyl_theta;
     /// Orientation of the cylinder in the plane of the detector [rad]
-    //  [DEFAULT]=cyl_phi=1.0 rad
+    //  [DEFAULT]=cyl_phi=1.0 [rad]
     double cyl_phi;
-	
+
 } CylinderParameters;
 
Index: sansmodels/src/sans/models/c_extensions/ellipsoid.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/ellipsoid.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/ellipsoid.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -9,14 +9,16 @@
  //[PYTHONCLASS] = EllipsoidModel
  //[DISP_PARAMS] = radius_a, radius_b, axis_theta, axis_phi
- //[DESCRIPTION] = <text>"P(q.alpha)= scale*f(q)^(2)+ bkg\n\
- //					f(q)= 3*(scatter_sld- scatter_solvent)*V*[sin(q*r(Ra,Rb,alpha)) - q*r*cos(qr(Ra,Rb,alpha))]
- //							/[qr(Ra,Rb,alpha)]^(3)"
- //						r(Ra,Rb,alpha)= [Rb^(2)*(sin(alpha))^(2) + Ra^(2)*(cos(alpha))^(2)]^(1/2)
- //						scatter_sld: scattering length density of the scatter
- //						solvent_sld: scattering length density of the solvent
- //						V: volune of the Eliipsoid
- //						Ra: radius along the rotation axis of the Ellipsoid
- //						Rb: radius perpendicular to the rotation axis of the ellipsoid
- //						</text>
+ //[DESCRIPTION] = <text>"P(q.alpha)= scale*f(q)^(2)+ bkg
+ //		f(q)= 3*(scatter_sld- scatter_solvent)*V
+ //			*[sin(q*r(Ra,Rb,alpha))- q*r*cos(qr(Ra,Rb,alpha))]
+ //		/[qr(Ra,Rb,alpha)]^(3)"
+ //     r(Ra,Rb,alpha)= [Rb^(2)*(sin(alpha))^(2)
+ //     + Ra^(2)*(cos(alpha))^(2)]^(1/2)
+ //		scatter_sld: scattering length density of the scatter
+ //		solvent_sld: scattering length density of the solvent
+ //		V: volune of the Eliipsoid
+ //		Ra: radius along the rotation axis of the Ellipsoid
+ //		Rb: radius perpendicular to the rotation axis of the ellipsoid
+ //		</text>
  //[FIXED]= <text> axis_phi.width; axis_theta.width;radius_a.width;
  //radius_b.width; length.width; r_minor.width
@@ -30,25 +32,25 @@
     double scale;
 
-    ///	Rotation axis radius_a [A]
-    //  [DEFAULT]=radius_a=20.0 A
+    ///	Rotation axis radius_a [Å]
+    //  [DEFAULT]=radius_a=20.0 [Å]
     double radius_a;
 
-    /// Radius_b [A]
-    //  [DEFAULT]=radius_b=400 A
+    /// Radius_b [Å]
+    //  [DEFAULT]=radius_b=400 [Å]
     double radius_b;
 
-    ///	Contrast [Å-2]
-    //  [DEFAULT]=contrast=3.0e-6 A-2
+    ///	Contrast [1/Å²]
+    //  [DEFAULT]=contrast=3.0e-6 [1/Å²]
     double contrast;
 
-	/// Incoherent Background [cm-1]
-	//  [DEFAULT]=background=0 cm-1
+	/// Incoherent Background [1/cm]
+	//  [DEFAULT]=background=0 [1/cm]
 	double background;
 
     /// Orientation of the long axis of the ellipsoid w/respect incoming beam [rad]
-    //  [DEFAULT]=axis_theta=1.57 rad
+    //  [DEFAULT]=axis_theta=1.57 [rad]
     double axis_theta;
     /// Orientation of the long axis of the ellipsoid in the plane of the detector [rad]
-    //  [DEFAULT]=axis_phi=0.0 rad
+    //  [DEFAULT]=axis_phi=0.0 [rad]
     double axis_phi;
 } EllipsoidParameters;
Index: sansmodels/src/sans/models/c_extensions/elliptical_cylinder.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/elliptical_cylinder.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/elliptical_cylinder.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -5,8 +5,8 @@
  * [PYTHONCLASS] = EllipticalCylinderModel
  * [DISP_PARAMS] = r_minor, r_ratio, length, cyl_theta, cyl_phi, cyl_psi
- * [DESCRIPTION] = ""
+ * [DESCRIPTION] = Please see details...
  * [FIXED]= <text> cyl_phi.width;
  * cyl_theta.width; cyl_psi.width; length.width; r_minor.width; r_ratio.width </text>
- * [ORIENTATION_PARAMS]= cyl_phi; cyl_theta; cyl_psi;  cyl_phi.width; cyl_theta.width; cyl_psi.width 
+ * [ORIENTATION_PARAMS]= cyl_phi; cyl_theta; cyl_psi;  cyl_phi.width; cyl_theta.width; cyl_psi.width
  * */
 
@@ -16,27 +16,27 @@
     //  [DEFAULT]=scale=1.0
     double scale;
-    /// Minor radius [A]
-    //  [DEFAULT]=r_minor=20.0 A
+    /// Minor radius [Å]
+    //  [DEFAULT]=r_minor=20.0 [Å]
     double r_minor;
     /// Ratio of major/minor radii
-    //  [DEFAULT]=r_ratio=1.5 A
+    //  [DEFAULT]=r_ratio=1.5
     double r_ratio;
-    /// Length of the cylinder [A]
-    //  [DEFAULT]=length=400.0 A
+    /// Length of the cylinder [Å]
+    //  [DEFAULT]=length=400.0 [Å]
     double length;
-    /// Contrast [A-2]
-    //  [DEFAULT]=contrast=3.0e-6 A-2
+    /// Contrast [1/Å²]
+    //  [DEFAULT]=contrast=3.0e-6 [1/Å²]
     double contrast;
-	/// Incoherent Background (cm-1) 0.000
-	//  [DEFAULT]=background=0 cm-1
+	/// Incoherent Background [1/cm] 0.000
+	//  [DEFAULT]=background=0 [1/cm]
 	double background;
     /// Orientation of the cylinder axis w/respect incoming beam [rad]
-    //  [DEFAULT]=cyl_theta=1.57 rad
+    //  [DEFAULT]=cyl_theta=1.57 [rad]
     double cyl_theta;
     /// Orientation of the cylinder in the plane of the detector [rad]
-    //  [DEFAULT]=cyl_phi=0.0 rad
+    //  [DEFAULT]=cyl_phi=0.0 [rad]
     double cyl_phi;
     /// Orientation of major radius of the cross-section w/respect vector q [rad]
-    //  [DEFAULT]=cyl_psi=0.0 rad
+    //  [DEFAULT]=cyl_psi=0.0 [rad]
     double cyl_psi;
 } EllipticalCylinderParameters;
Index: sansmodels/src/sans/models/c_extensions/sphere.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/sphere.h	(revision 25a608f5e19bd180280be5c566de99df08fb9e8f)
+++ sansmodels/src/sans/models/c_extensions/sphere.h	(revision 70faf5d3c442d5fcdc306dc9d9515f3f22d44799)
@@ -7,5 +7,6 @@
  //[PYTHONCLASS] = SphereModel
  //[DISP_PARAMS] = radius
- //[DESCRIPTION] =<text>P(q)=(scale/V)*[3V(scatter_sld-solvent_sld)*(sin(qR)-qRcos(qR))/(qR)^3]^(2)
+ //[DESCRIPTION] =<text>P(q)=(scale/V)
+ //						*[3V(scatter_sld-solvent_sld)*(sin(qR)-qRcos(qR))/(qR)^3]^(2)
  //						+bkg
  //						bkg: background level
@@ -17,5 +18,5 @@
  //[FIXED]=  radius.width
  //[ORIENTATION_PARAMS]= <text> </text>
- 
+
 typedef struct {
     /// Scale factor
@@ -23,14 +24,14 @@
     double scale;
 
-    ///	Radius of sphere [A]
-    //  [DEFAULT]=radius=60.0 A
+    ///	Radius of sphere [Å]
+    //  [DEFAULT]=radius=60.0 [Å]
     double radius;
 
-    ///	Contrast [Å-2]
-    //  [DEFAULT]=contrast= 1.0e-6 A-2
+    ///	Contrast [1/Å²]
+    //  [DEFAULT]=contrast= 1.0e-6 [1/Å²]
     double contrast;
 
-	/// Incoherent Background [cm-1]
-	//  [DEFAULT]=background=0 cm-1
+	/// Incoherent Background [1/cm]
+	//  [DEFAULT]=background=0 [1/cm]
 	double background;
 } SphereParameters;
