User experience

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Across
  1. 3. T = a + b*log_2(1+ D/L)
  2. 4. Feeling what other people feels
  3. 8. Represents the flow of the user's actions
  4. 10. Usable by people with disabilities
  5. 13. !(The title of this crossword)
  6. 14. People that doesn't exist
  7. 15. Output routed back as input
Down
  1. 1. Low-fidelity representation of a product
  2. 2. The ease of use with which the user can interact with your site
  3. 5. Diagram with clouds and arrows inside
  4. 6. Graphical representation of a product
  5. 7. The title of this crossword
  6. 9. Git's merges
  7. 11. The actions made by an individual
  8. 12. A bunch of questions grouped together