Schematic sketch (not to scale) illustrating the formation of sunspot penumbral jets. All jets travel along the spine fields, which are more vertical in inner penumbrae (near filament heads). The red dashed lines with arrow heads show the direction of field lines in the filament. In a box in the middle bottom the magnetic configuration as well as the reconnection of the spine field with the opposite-polarity field at the filament edge are shown. [Reproduced from Tiwari et al. (2016) by permission of the AAS.] (Color online)