diff --git a/codemeta_generation.js b/codemeta_generation.js
--- a/codemeta_generation.js
+++ b/codemeta_generation.js
@@ -36,6 +36,24 @@
     'issueTracker',
     'name',
     'version',
+    'identifier',
+    'description',
+    'applicationCategory',
+    //keywords TODO:keywords array 
+    'releaseNotes',
+    'funding',
+    'runtimePlatform',
+    //softwareRequiremnts,
+    'operatingSystem',
+    'developmentStatus',
+    //relatedLink
+    'programmingLanguage',
+    'isPartOf',
+    //'referencePublication'
+    //      "@type": "ScholarlyArticle",
+    //      "idendifier": "https://doi.org/xx.xxxx/xxxx.xxxx.xxxx",
+    //      "name": "title of publication"
+    
 ];
 
 // Names of codemeta properties with a matching HTML field name,
@@ -44,6 +62,7 @@
     'givenName',
     'familyName',
     'email',
+    'affiliation'   
 ];
 
 function generatePerson(idPrefix) {
diff --git a/dynamic_form.js b/dynamic_form.js
--- a/dynamic_form.js
+++ b/dynamic_form.js
@@ -35,6 +35,11 @@
             <input type="url" id="${personPrefix}_id" name="${personPrefix}_id"
                 placeholder="http://orcid.org/0000-0002-1825-0097" />
         </p>
+        <p>
+        <label for="${personPrefix}_affiliation">Affiliation</label>
+        <input type="url" id="${personPrefix}_affiliation" name="${personPrefix}_affiliation"
+            placeholder="Department of Computer Science, University of Pisa" />
+        </p>
     `;
 
     return fieldset;
diff --git a/fields_data.js b/fields_data.js
--- a/fields_data.js
+++ b/fields_data.js
@@ -10,6 +10,7 @@
 var SPDX_LICENSES = null;
 var SPDX_LICENSE_IDS = null;
 
+
 function initSpdx() {
     var xhr = new XMLHttpRequest();
     xhr.open('GET', './data/spdx/licenses.json', true);
diff --git a/index.html b/index.html
--- a/index.html
+++ b/index.html
@@ -28,8 +28,46 @@
                 <label for="name">Name</label>
                 <input type="text" name="name" id="name"
                     placeholder="My Software" required="true" />
+                <description>the software title</description>
             </p>
 
+
+            <p title="Unique identifier">
+                <label for="identifier">Unique identifier</label>
+                <input type="text" name="identifier" id="identifier"
+                    placeholder="10.151.xxxxx"  />
+                    <description>such as ISBNs, GTIN codes, UUIDs etc..  <a href="http://schema.org/identifier">http://schema.org/identifier</a> </description>
+            </p> 
+            <!-- TODO:define better
+            
+            I looked at the schema.org definition of identifier (https://schema.org/identifier),
+            it can be text, url or PropertyValue.
+            Used as follows in data representation with microdata:
+
+            <div property="identifier" typeof="PropertyValue">
+            <span property="propertyID">DOI</span>: 
+            <span property="value">10.151.xxxxx</span>
+            </div>
+            we can use that with identifier-type and identifier-value to have a clearer idea 
+            of what needs to be in the input.
+            
+            -->
+
+            <p title="Type of the software application">
+                <label for="applicationCategory">Application category</label>
+                <input type="text" name="applicationCategory" id="applicationCategory"
+                    placeholder="Astronomy"  />
+            </p>
+
+            <p title="a brief description of the software">
+                <label for="description">Description</label>
+                <br>
+                <textarea rows="4" cols="50" 
+                    name="description" id="description"
+                    placeholder="My Software computes ephemerides and orbit propagation. It has been developed from early ´80." ></textarea>
+            </p> 
+            
+
             <p title="The date on which the software was created.">
                 <label for="dateCreated">Creation date</label>
                 <input type="text" name="dateCreated" id="dateCreated"
@@ -46,7 +84,8 @@
                 <label for="license">License</label>
                 <input list="licenses" name="license" id="license">
                 <datalist id="licenses">
-                </datalist>
+                </datalist> <!-- TODO: insert placeholder -->
+                <description>from <a href="https://spdx.org/license-list">SPDX licence list</a></description>
             </p>
         </fieldset>
 
@@ -86,6 +125,24 @@
                 <input type="text" name="dateModified" id="dateModified"
                     placeholder="YYYY-MM-DD" pattern="\d{4}-\d{2}-\d{2}" />
             </p>
+
+            <p title="a brief description of the software">
+                <label for="releaseNotes">Release notes</label>
+                <br>
+                <textarea rows="4" cols="50" 
+                    name="releaseNotes" id="releaseNotes"
+                    placeholder=
+"Change log: this and that; 
+Bugfixes: that and this." ></textarea>
+            </p> 
+<!--TODO: keywords as a string array -->
+
+<!--TODO: software requirements as string array -->
+
+<!--TODO: related links as URL array -->
+
+<!--TODO: referencePublication as ScholarlyArticle array -->
+
         </fieldset>
 
         <fieldset class="persons" id="author_container">
@@ -115,6 +172,57 @@
                     onclick="removePerson('contributor');" />
             </div>
         </fieldset>
+
+        <fieldset id="fieldsetAdditionalInfo">
+            <legend>Additional Info</legend>
+            <p title="Funding">
+                <label for="funding">Funding</label>
+                <input type="text" name="funding" id="funding"
+                    placeholder="Università di Pisa (PRA_2018_73)"/>
+                <description>software funded by (e.g. specific grant)</description>
+            </p>
+
+            <p title="Runtime Platform">
+                <label for="runtimePlatform">Runtime Platform</label>
+                <input type="text" name="runtimePlatform" id="runtimePlatform"
+                    placeholder="Python2.3"  />
+            </p>
+
+            <p title="Operating System">
+                <label for="operatingSystem">Operating System</label>
+                <input type="text" name="operatingSystem" id="operatingSystem"
+                    placeholder="Android 1.6"  />
+            </p>
+
+            <p title="Development Status">
+            <label for="developmentStatus">Development Status</label>
+                <datalist id="developmentStatuses">
+                        <option value="Concept">
+                        <option value="WIP">
+                        <option value="Suspended">
+                        <option value="Abandoned">
+                        <option value="Active">
+                        <option value="Inactive">
+                        <option value="Unsupported">
+                        <option value="Moved">
+                </datalist>
+                <input list="developmentStatuses" id="developmentStatus" 
+                pattern="Concept|WIP|Suspended|Abandoned|Active|Inactive|Unsupported|Moved">
+                <description>see <a href="http://www.repostatus.org">www.repostatus.org</a> for details</description>
+            </p>
+
+            <p title="Programming Language">
+                <label for="programmingLanguage">Programming Language</label>
+                <input type="text" name="programmingLanguage" id="programmingLanguage"
+                    placeholder="C#"  />
+            </p> <!-- TODO: We should add support for multiple languages, eg. by splitting on commas when exporting. -->
+
+            <p title="Part of">
+                <label for="isPartOf">I part of </label>
+                <input type="URL" name="isPartOf" id="isPartOf"
+                    placeholder="http://The.Bigger.Framework.org"  />
+            </p>
+        </fieldset>
     </form>
     <form>
         <input type="button" id="generateCodemeta" value="Generate Codemeta" />
diff --git a/style.css b/style.css
--- a/style.css
+++ b/style.css
@@ -5,6 +5,7 @@
  * See top-level LICENSE file for more information
  */
 
+
 .person {
     display: inline-block;
 }
@@ -18,10 +19,20 @@
     min-width: 20em;
 }
 
+#funding {
+    /* Funding names are long */
+    min-width: 20em;
+}
+
 input[type=URL] {
     /* URLs are longer than the other fields */
     min-width: 20em;
 }
+description {
+    color : rgb(100, 104, 103);
+    font-size: small;
+    display: block;
+}
 
 #codemetaText {
     width: 100%;
@@ -32,3 +43,11 @@
 #errorMessage {
     color: red;
 }
+
+input:valid {
+    color: black;
+  }
+input:invalid {
+    color: red;
+  }
+