Join Angle
This is the strength of the modifier’s effect, from 0% (no effect) to 100% (full effect).
Use this setting to define the look of the line tips.
No Change
When in this mode, the parameter’s values will remain unchanged at both start and end of a given line. For example, if Thickness is set to 12 pixels in the Thickness tab the line will be 12 pixels thick at its start and at its end.
Minimum Angle, Zero Angle, Maximum Angle
Depending on the option selected, the line ends will reflect minimum, maximum or zero angle.
See Distance / Mode.