Abstract: A tape cassette includes a box-like housing, a tape mounted within the housing, a hole and a first indicator portion. The housing includes a top wall having a top surface, a bottom wall having a bottom surface and opposing the top wall, and a front wall having a specified height and being formed along peripheries of the top wall and the bottom wall. The hole is provided in the front wall. The first indicator portion includes at least one first aperture and indicates a first element among a plurality of elements of a type of the tape. The first indicator portion is provided in a portion, spaced from the front wall, of the bottom wall. The hole and the one first aperture is located to intersect a virtual line orthogonal to the front wall when viewing along a vertical direction orthogonal to the top wall and the bottom wall.

Abstract: A keyboard finger guide includes two or more elongated planar guides that are in a parallel orientation to each other. A plurality of curvilinear dividers is secured to the guides in a perpendicular orientation and provide a tactile guide to align fingers on a keyboard. The upper surface of the dividers can include a nonabrasive and malleable material, or the dividers can be completely constructed from a malleable material so as to allow the shape of the device to conform to variances in keyboard manufacture and designs.