First click the flag. Drag the purple rock-shaped sprite along the purple dotted line of Field At Mit until you reach the key. Click the key and wait at least 2-3 seconds for the backdrop to change. Next, drag the sprite along the left side of black dotted line of the new backdrop until you perform Tic tac; clicking the black line above the 'h' of hurdle and..... surprise!
To Lauren Child for the 4th book of Ruby Redfort; that Parkour that she learns then persuaded my best friend and I to spend every break-time at school practising these skills.