Goal: So as to get started , Open the Structured Query language.pdf file and view it in the dropbox app 
Steps:
action: action_type: navigate_back
step_instruction: Get back to the previous page of the Dropbox app
action: action_type: click
step_instruction: Click on the Structured Query language.pdf file
action: action_type: wait
step_instruction: Click on the Structured Query language.pdf file
action: action_type: scroll
direction: down
step_instruction: Swipe  up to view the file details
action: action_type: scroll
direction: down
step_instruction: Swipe  up to view the file details
action: action_type: scroll
direction: down
step_instruction: Swipe  up to view the file details
action: action_type: scroll
direction: down
step_instruction: Swipe  up to view the file details
action: action_type: scroll
direction: down
step_instruction: Swipe  up to view the file details