By manipulating line widths, you can customize the look of the drawing.
In the example below, the elbow is drawn thicker so as to better distinguish it from the pipe. Separate settings are used for the screen and the printer. The printer settings apply also to PDF files.
Select Local Settings as shown below.
To draw the elbows and tees thicker, increase the line width in pixels for the screen or printer in the table below. Note that you need to put the focus on the appropriate cell and use the spinner, highlighted, to increment or decrement the number of pixels. This setting is specific to the individual user and applies to all jobs. It can be changed anytime.