The following slides continue explaining various HTML and XML tags.
  
  Slide 12.1: XML (eXtensible Markup Language) 
  Slide 12.2: XML (cont.) 
  Slide 12.3: How can XML be used? 
  Slide 12.4: How can XML be used? (cont.)
  
  Slide 12.5: XHTML (eXtensible HyperText Markup Language) 
  Slide 12.6: Differences between XHTML and HTML 
  Slide 12.7: Differences between XHTML and HTML (cont.) 
  Slide 12.8: XHTML syntax 
  Slide 12.9: XHTML syntax (cont.) 
  Slide 12.10: XHTML DTD 
  Slide 12.11: XHTML DTD (cont.) 
  Slide 12.12: XHTML validataion
  
  Slide 12.13: HTML5 
  Slide 12.14: HTML5 canvas 
  Slide 12.15: HTML5 video 
  Slide 12.16: HTML5 Geolocation 
 
 
 
 
  
   
  Slide 12.a: HTML tutorial from W3Schools 
  Slide 12.b: XML tutorial from W3Schools 
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