Leaflet – "an open-source JavaScript library for mobile-friendly interactive maps"

- References:
  1. Leaflet official website [Link]
  2. Tutorials [Link]
  3. Documentation [Link]
  4. Plugins [Link]
- Lab_12_geoserver_request_wms
  1. Lab_12_A (World, USA)
     - A1
     - A2
     - A3
     - A4
     - A5
     - A6
  2. Lab_12_B (Taiwan area)
     - B1
     - B2
     - B3
     - B4
     - B5
  3. Lab_12_H (Hong Kong area)
     - H1
     - H2
     - H3