Add cocumentation to ScattererConfiguration comparison operator

src/include/Configuration.h

@@ -306,7 +306,7 @@ public:
    * for dimensions).
    * \param dc_matrix: Matrix of reference dielectric constants.
    * \param has_external: `bool` Flag to set whether to add an external spherical layer.
-   * \param exdc: `double` EXDC
+   * \param exdc: `double` External medium dielectric constant.
    * \param wp: `double` wp
    * \param xip: `double` xip
    */
@@ -396,6 +396,12 @@ public:
   void write_formatted(std::string file_name);
 
   /*! \brief Test whether two instances of ScattererConfiguration are equal.
+   *
+   * ScattererConfiguration objects can be obtained in a variety of manner. They can
+   * be constructed manually, through the class constructor, they can be read from
+   * formatted configuration files, or they can be loaded from binary files. The `==`
+   * operator tests for the equivalence of two configuration instances, returning `true`
+   * if they are equivalnet, `false` otherwise.
    *
    * \param other: `ScattererConfiguration &` Reference to the instance to be compared with.
    * \return result: `bool` True, if the two instances are equal, false otherwise.