These "Nishidhis" detail the names, dates, the duration of the vow, and other austerities performed by the person who observed the vow. The earliest "Nishidhis" (6th to 8th century) mostly have an inscription on the rock without any symbols. This style continued until the 10th century when footprints were added alongside the inscription. After the 11th century, "Nishidhis" are inscribed on slabs or pillars with panels and symbols. These slabs or pillars were frequently erected in "mandapa"s (pillared pavilions), near "basadi" (temples), or sometimes as an inscription on the door frame or pillars of the temple.