Romansh language the most comprehensive collection of Romansh words, which can also be used in the idioms with the necessary phonetic shifts. The signatories of "Pro Rumantsch" stress that Romansh needs both the idioms and Rumantsch Grischun if it is to improve its chances in today's communication society. In Switzerland, official language use is governed by the "territorial principle": Cantonal law determines which of the four national languages enjoys official status in which part of the territory. Only the federal administration is officially quadrilingual. Romansh is an official language at the federal level, one of the three official languages of the Canton
Romansh language institutions. In 1986, the federal administration began to use Rumantsch Grischun for single texts. The same year, however, several influential figures began to criticize the introduction of Rumantsch Grischun. Donat Cadruvi, at the time the president of the cantonal government, claimed that the Lia Rumantscha was trying to force the issue. Romansh writer Theo Candinas also called for a public debate on the issue, calling Rumantsch Grischun a "plague" and "death blow" to Romansh and its introduction a "Romansh Kristallnacht", thus launching a highly emotional and bitter debate which would continue for several years. The following year, Theo Candinas published