anchor.diff:                                  var gradientMap = '#{SAAL.secondary_color}, #{SAAL.main_color}';
   
                                   GradientMaps.applyGradientMap(slide#{id}, gradientMap); 
  -                        
  +
           .row.page-margin
  -            
   
               .col-md-12
                   .programme.row
  
positive.code:                                 h1
                                      if op.get(echo, 'author', '')
                                          span.artist= op.get(echo, 'author', '')
                                      
                                      //- if op.get(echo, 'producer', '')    
                                      //-     span.producer= op.get(echo, 'producer', '')
                                      //- 
                                      //- if op.get(echo, 'town', '')    
                                      //-     span.town= op.get(echo, 'town', '')
                                          
                                  h1= op.get(echo, lang + '-title', '')
                                  
                                  if op.get(echo, lang + '-subtitle', '')
                                      p= op.get(echo, lang + '-subtitle', '')
  
  
negative.code:                                                 a(href='./magazine/' + op.get(p,'id'))= op.get(p, lang + '-title')
                                                      if op.get(p, 'author', [])
                                                          span.artist= op.get(p, 'author', []).join(', ')
  
                                                      span.name= op.get(p, lang + '-title')
  
                                                      if op.get(p, lang + '-subtitle', '')
                                                          span.subtitle= op.get(p, lang + '-subtitle', '')
  
  