Infill is simply a repetitive structure used to take up space inside an empty 3D object. Generally, the infill is visible during the printing, when the job is over, it is hidden inside the object structure.

Infill Volume
The insides of our 3D object can be empty, half-half, full, and all the shades in-between. It is a value in percent and you can choose a different infill other than the grind.
Angles of sparse internal fill
It’s the arrangement of the infill, very similar to Shell in the previous Pathio article.
Infill rotation per Layer
Again, just like the previous article, we can set the change in rotation of the infill.
Print infill every number of layers
It’s an interesting parameter if you want to speed up the job. The printer can create 2 shells, the infill gets printed faster and it covers 2 layers in one go. The gif shows exactly this.

Infill track width
Based on what is needed, a stronger infill, or a quicker job, this parameter changes the width of the track.