Along with these main functions, the gurudwaras around the world also serve the Sikh community in many other ways including, libraries of Sikh literature, schools to teach children Gurmukhi (Sikh script), the Sikh scriptures and charitable work in the wider community on behalf of Sikhs. There are no idols, statues, or religious pictures in a Gurudwara, but the essential feature of a Gurudwara is the presiding presence of the holy book and the eternal Sikh Guru, the Guru Granth Sahib. The Sikhs hold high respect for the teachings and commandments laid down in the Guru Granth Sahib.