anchor.diff:                              input.form-control(
                               name="title"
                               type="text"
  +                            required
                               placeholder="Title (required)..."
                               ng-model="new_document.title"
                               autocomplete="off")
  
positive.code:                             placeholder="Year published (required)..."
                              ng-model="new_document.year"
                              ng-pattern="yearPattern"
                              autocomplete="off")
  
                  // EXISTING DOC
  
negative.code:                     .col-lg-12.row.form-group
                          textarea.form-control(
                          name="comment"
                          placeholder="Comments..."
                          ng-model="answer.new_ref_comment"
                          autocomplete="off")
  