Designers highlighted in this video:
Corel draw software
Pen tool (P)
Creates curved lines
Line tool (\)
Creates straight lines. Use shift + Line tool to make perfectly straight lines or lines at 45 degree increments.
Grouping lines to make parts
Ctrl + G
Each line has a beginning and ending anchor point. Use (A) to grab an anchor point and stretch a line.
Guides that help alignment between anchor points.
Use (V) to select entire object > Right click > Transform > Reflect
Moving lines with arrow keys
Use Direct Selection Tool (A) to draw box around lines to move.
Add anchor point
(P) Pen tool + (+)