Parameters: n: default 5, minimum value: 1, maximum value: 999, step size: 1.
The maximum and minimum values are easy to understand. The step size of n refers to the minimum amplitude of each change. Just like walking, how far you have to go in one step.
For example: draw line 5, N=5, draw line 10, N= 10, and the step between 5 and 10 =5.
If you want to set the step size as 10, then the minimum number starting from 5 is 5+ 10= 15, and N= 10 will not appear.
Therefore, the step size is relatively small and easy to operate. If there are special requirements, the step size can also be set to decimal.