A golf putting practice guide that holds a golf club in a putting position, and allows a golfer to perform putting strokes about a single axis that passes between the shoulders of the golfer. The apparatus includes a laser base unit which irradiates an interaction region with laser light, the laser light removing material from the structure. 1wherein DmaxDmin is the smallest of the value in a wavelength range of 340 to 450 nm;b-1): 1300\u2266A\u226620000wherein B is yellow Dmax, C is yellow Dmin; and A is an amount molm2 of the coupler of formula. The present invention is a simple and efficient device for providing a detent assist with tactile feedback. Executable code within the network adapter’s memory notifies host system drivers of posted messages, waits for acknowledgments from the drivers and sends a completion notification to the host system drivers. The computer judges whether there is continuity between the transferred data and data transferred just before the transferred data.