A squeeze bottle having a container and a cap for containing and dispensing a viscous liquid such as a food condiment or sauce. The moldable IR transmissive material is an arsenic selenide glass. Such methods substantially increase the solubility and stability of these proteasome inhibitors and facilitate both their manufacture and administration. The edge engaging mechanism is compressively engagable with the folded edge of a booklet for forming a crease in the booklet. A printhead includes a metal probe that intersects an ink nozzle and an integrated circuit to sense a change in impedance across the nozzle through the metal probe. For visual content, a reference image and watermarked image are passed through the model and then supplied to a visual quality metric that assesses the visibility of the watermark.