Not only does it illustrate the basic concepts like orthography and non-orthographic signs, the thesis reviews the Croatian ortography since the year 2000 until today, with the accent on the orthographic signs used in everyday life, for example on web pages or electronical devices and in technical disciplines. Not all orthographic books have the same distribution of the orthographic signs so the elaborated functions are the ones that have a period, a comma, a slash, mathematical signs, ringlets and others, while in some orthographic books we can in the signs section find monetary units, smilies and signs for trade marks. Besides the Croatian orthography in the thesis was also used „The Slovenian orthography“ from the Slovenian academy of science and art and the „Croatian computer spelling-checker“. In the definment of nonorthographic signs were used in consideration not only the opinions of linguists, but the opinions of the mathematic, informatic, chemical and other disciplines. Their conclusions are based on the Croatian and international standards so in the thesis are also depicted the records of the Croatian Standard Institute. For the retrospection on the belief of the technical discipline was used the dissertate which was launched after „The Croatian orthography“ of the Institut for the Croatian language and linguistics in 2013.