exposed after installation and or 2 the portion of the shingle that may be exposed without adversely effecting the aesthetics and or function of the shingle in certain embodiments a shingle of this invention will comprise markings grooves and or other features or relief collectively referred to as u201c markings u201d to emulate the appearance of other roofing products such as shakes as illustrated in fig1 or slate as illustrated in fig3 in such an embodiment the markings are preferably included on the entire front top portion of the shingle thus as illustrated in fig1 the front top portion 272 of the shingle 200 comprises markings e g grooves 247 249 which aid in the emulation of shake the front wall 24 224 of a shingle refers to a wall downwardly disposed from the bottom of the shingle at the front edge a notch 12 such as the notch of the embodiment of fig1 12 would represent a void or break in the front wall although it is preferred that other than at the notch 12 the front wall 24 be continuous other voids in the wall may be provided a preferred height of a front wall 24 224 of a shingle 2 200 of this invention will depend in part on the front height of other shingles to be used with a hip and ridge shingle of this invention an exemplary height is approximately 0 5 inches in the exemplary embodiment of fig4 the front wall 24 is slanted outward similarly an outwardly slanted front wall 224 is provided in the embodiment illustrated on fig1 in one embodiment the front wall 24 of a shingle of this invention is somewhat thicker outside.