A modular fluid-dispensing system includes a master control dispenser andor one or more satellite dispensers that communicate bi-directionally with the master control dispenser. The internal cavity is substantially filled with ink. The laser includes a first reflector and a second reflector for fundamental beam, forming a resonator cavity having an optical axis. The character may move within the regions and interact with the objects. This material satisfies the following composition, in mol % on the basis of just the oxides Al2O3, TiO2, MgO and ZrO2: 90<2a+3m<110; 100+a<3t<210\u2212a; and a+t+m+zr=100, in which: a is the molar content of Al2O3; t is the molar content of TiO2; m is the molar content of MgO; and zr is the molar content of ZrO2.