You may need to hold down the Shift key during boot to see the prompt, as a system may be configured so that it bypasses the prompt.
And then hold down the Shift key after the first click leaf progressive click peduncle, two elliptic, mark and selected the five shapes, click on the "joint" shape can get an apple logo (figure 2).
Select the Polygonal Lasso Tool (l) and create a triangular shape -holding down the Shift key whilst making the triangle will ensure each side is perfectly straight.
Hold the Shift key when clicking the delete button to permanently delete a file.