More than a style guide, it serves as a guide to the rules and commitments Folha works under. It was the first publication of its kind to be made available to the general public. The guidelines stipulate that Folha's journalism should be descriptive and accurate, but that themes that cause controversy can admit to more than one viewpoint and require a pluralistic treatment. Folha also became known for its highly diverse selection of columnists. At the same time, checks and balances were instituted through internal controls: the Manual, the daily "Corrections" section adopted in 1991, a rule stating that objections to any article expressed by readers or for people mentioned in the news should be published, and, above all, the ombudsman position created in 1989; this position entails job security for its holder, whose aim is to criticize Folha and deal with complaints by readers and people mentioned in the news. From the midpoint of the Brazilian military rule, Folha kept a critical stance towards several succeeding administrations (Ernesto Geisel, João Figueiredo, José Sarney, Fernando Collor, Itamar Franco). Otavio Frias Filho was sued, with three of Folha's reporters, by then President Fernando Collor. Although Folha expressed support for Collor's liberalizing economic views, it was the first publication to appeal for his impeachment, which finally came in 1992. The newspaper's coverage about the administrations of Fernando Henrique Cardoso (PSDB) and Luiz Inácio Lula da Silva (PT) led to accusations of anti-governmental bias in both cases, though the two Presidents belong to rival parties. Beginning with the exposure of a massive fraud on the Norte-Sul railway (1985), and through the Mensalão scandal (2005), Folha kept revealing abuses and misrule. In 1986, Folha became the newspaper with the largest circulation among big Brazilian dailies, and it still leads today. In 1995, one year after reaching the landmark of one million copies for its Sunday edition, the company put into operation its new printing center, seen as the most technologically advanced in Latin-America. The company's circulation and sales record was set in 1994, with the launch of the "Atlas Folha/The New York Times" (1,117,802 copies for the Sunday edition.) Currently, Folha extended its range of communication activities, with newspapers, databanks, a polling institute, a newswire, a real-time news and entertainment service, a printing company for magazines and a delivery company. In 1991, all shares of Empresa Folha da Manhã then belonging to Carlos Caldeira