start merging the reference manuals

doc/_themes/blue/static/default.css_t

@@ -274,17 +274,30 @@ tt.descname {
     font-size: 1.6em;
 }
 
-dl.cfunction {
-    padding-bottom: 9px;
+div.math p {
+    margin-top: 10px;
+    margin-bottom: 10px;
+}
+
+dl.function > dt:first-child {
+    margin-bottom: 7px;
+    background-color: #ecf0f3;
 }
 
 dl.cfunction > dt:first-child {
     margin-bottom: 7px;
-    border-bottom: 1px dotted black;
+    background-color: #ecf0f3;
+}
+
+dl.pyfunction > dt:first-child {
+    margin-bottom: 7px;
+    background-color: #ecf0f3;
 }
 
-div.math p {
-    margin-top: 10px;
-    margin-bottom: 10px;
+table.field-list {
+    margin-top: 20px;
 }
 
+ul.simple {
+    list-style: none;
+}

modules/core/doc/operations_on_arrays.rst

@@ -3,15 +3,6 @@ Operations on Arrays
 
 .. highlight:: cpp
 
-.. list-table:: **Arithmetical Operations**
-
-   * -
-     -
-   * - :ocv:func:`abs` (src)
-     - Computes an absolute value of each matrix element.
-   * - :ocv:func:`absdiff` (src1, src2, dst)
-     - Computes the per-element absolute difference between 2 arrays or between an array and a scalar.
-
 abs
 ---
 .. ocv:function:: MatExpr abs(const Mat& src)
@@ -77,9 +68,11 @@ The function ``absdiff`` computes:
 
 add
 -------
-.. ocv:function:: void add(InputArray src1, InputArray src2, OutputArray dst, InputArray mask=noArray(), int dtype=-1)
 
-    Computes the per-element sum of two arrays or an array and a scalar.
+Computes the per-element sum of two arrays or an array and a scalar.
+
+.. ocv:function:: void add(InputArray src1, InputArray src2, OutputArray dst, InputArray mask=noArray(), int dtype=-1)
+.. ocv:pyfunction:: cv2.add(src1, src2 [, dst=None [, mask=None [, dtype=-1]]]) -> dst
 
     :param src1: First source array or a scalar.