Methods and apparatuses are provided for dynamic registration of privileged mode hooks in a device that can operate in a privileged mode and a non-privileged mode. The laser module includes a housing rotating in unison with the saw blade, a laser generator positioned within the housing so as to emit a laser beam therefrom, a flexure bracket having a connector portion connected to the housing and a support portion supporting the laser generator, and an adjuster extending through the housing and engaging the flexure bracket. Increasing stretchability of a lead body can also increase the vulnerability of the lead body to flex fatigue, buckling fatigue, kinking, and crush. At the same time, valuable space at the lateral and upper sides of the laser beam printer is available for effective use. wherein X1, X2, X3 and X4 are independently H or halogen, preferably Cl or Br; R2 is substituent selected from the group consisting of H, C1-C20 straight or branched chain alkyl substituents, aromatic substituents, aliphatic substituents, and combinations thereof.