![]() An NI is never used if a TNI has already been used before the same number.A number is one or more digits and perhaps a decimal point that is used to represent either an integer or real number. Summary Version of Rules for Using the NI There is no advantage in Nemeth to the print practice of placing a leading zero before the decimal point of a decimal fraction and this is not usually done. Where the NI is required, it is used by placing one NI immediately before and unspaced from the first digit or leading decimal point of a number whether or not there are preceding symbols or indicators that apply to the number. Nemeth treats the ten Arabic digits and the decimal point as numeric symbols and an NI may be required before any of these. All other possible situations for unsigned and signed negative numbers will require a TNI before the leading numeric symbol so the number is not eligible for an NI.Ī positive number may require a TNI but will never require an NI since the plus sign is sufficient for the purposes of the NI. As is seen from the rules for the use of a TNI, a number is only eligible for an NI if it is either an unsigned number with at least its leading numeric symbol (digit or decimal point) set in regular type or a signed negative number with at least its leading numeric symbol set in regular type. (NI is the standard Nemeth nomenclature for both uses.)Īn NI is never used if a TNI has already been used before the first numeric symbol of the number. NI or Numeric Indicator is used to state the other rules for using an NI.TNI or "Typesetting" Numeric Indicator is used to state the rules for using an NI with a type-form indicator.It is convenient when explaining the use of the Indicators to use different names for the different functions as follows: If the Indicator has already been used for the first reason, then the second use does not normally need to be considered. (Symbols require preceding English-letter Indicators for similar reasons.) to ensure that the number not misread as a punctuation mark using the same cells or in an ambiguous situation.together with the use of special type-form indicators.Numbers require Numeric Indicators for two different reasons: This is correct but omission of the NI in this case is a common error. In the case of the crosshatch (and also the asterisk), there will be two repeated cells using (dots 3456). Numbers following reference and operation symbols always require a preceding Numeric Indicator. This same two-cell symbol is used for transcribing the print crosshatch whether it is used as a reference symbol or as a binary operator in special disciplines such as set theory. However, the braille symbol for the print crosshatch (also called pound sign, number sign, and hash mark) is the two cells dots 46 (Braille ASCII code 46 or keyboard period) followed by dots 3456. The braille symbol for the Nemeth Numeric Indicator is the single cell dots 3456 (Rule II) which is represented in Braille ASCII by ASCII code 35 which happens to correspond to the crosshatch in the standard keyboard character representation of the ASCII code. The Punctuation Indicator is the complement of the NI in this function. Since some of braille cells used for numerals are also used as punctuation marks, something has to be done to differentiate them. to add NI's as needed for particular displays, it is never correct to delete NI's that are required by the rules presented here. Nonetheless, in most cases of actual texts, the rules for the use and non-use of the NI depend on the requirements of the construct or mathematical template and can be determined prior to the addition of spaces or linebreaks needed only for final output on a device with a fixed line width.Īlso, although it is o.k. This makes it difficult when you first look at them to realize at what point the use or non-use of the NI can be determined unequivocally. Some examples in the book are fragments or taken out of context. This is a summary based on the printed Nemeth Braille Code 1972 Revision and references to numbered Rules, Sections, etc. Rules for numbers in special contexts such as Tables and Diagrams are also not addressed. This discussion is restricted to the use of the Numeric Indicator (NI) with Nemeth numbers and does not address numerals that are characters in a symbolic name rather than digits in a number. Summary Version of Rules for Using the NI.Use of the Numeric Indicator # Use of the Numeric Indicator (NI) with Nemeth Numbers
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