Added more comments

src/app/submission/sections/models/section-data.model.ts

@@ -2,14 +2,48 @@ import { SubmissionSectionError } from '../../objects/submission-objects.reducer
 import { WorkspaceitemSectionDataType } from '../../../core/submission/models/workspaceitem-sections.model';
 import { SectionsType } from '../sections-type';
 
+/**
+ * An interface to represent section model
+ */
 export interface SectionDataObject {
+
+  /**
+   * The section configuration url
+   */
   config: string;
+
+  /**
+   * The section data object
+   */
   data: WorkspaceitemSectionDataType;
+
+  /**
+   * The list of the section errors
+   */
   errors: SubmissionSectionError[];
+
+  /**
+   * The section header
+   */
   header: string;
+
+  /**
+   * The section id
+   */
   id: string;
+
+  /**
+   * A boolean representing if this section is mandatory
+   */
   mandatory: boolean;
+
+  /**
+   * The section type
+   */
   sectionType: SectionsType;
 
+  /**
+   * Eventually additional fields
+   */
   [propName: string]: any;
 }