anchor.diff:      .container
         h1 Presentations
         p
  -        | Download slides from presentations about CuratedCourses
  +        | Download slides from presentations about Curated Courses
   
     .container
       .row
  
positive.code: extends ../layouts/layout
  
  block head
    title About &middot; Presentations about CuratedCourses
  
  block styles
  
  
negative.code:         include:markdown presentations.md
      .row
        .col-md-3
          +presentation("The Curated Courses Project","jmm-2018-presentation.png","jmm-2018-presentation.pptx")
        .col-md-3
          +presentation("Linear Algebra using Curated Courses OERs","linalg_curated_JMM2018.png","linalg_curated_JMM2018.pptx")
          
  