Mixed numbers should be treated as two unspaced numeric items.

When the Nemeth Code text is displayed on one or more lines separate from the UEB text, the opening Nemeth Code indicator and the Nemeth Code terminator may each be placed on a line by itself.

The numeric fraction line is not used when the print is expressed linearly using an ordinary forward slash symbol. In such a case the same symbol is used as in print.

If the numerator or denominator is not entirely numeric as defined in 11.3.1, then the general fraction indicators should be used. Write the opening indicator, then the numerator expression, then the general fraction line symbol, then the denominator expression and finally the closing indicator.

Note: If an opening or closing fraction indicator appears within a grade 2 passage, it may need a grade 1 indicator.

Note: Both numerator and denominator may be any kind of expression whatever, including fractions of either simple numeric or general type.

Refer to: Guidelines for Technical Material, Parts 6.4 and 6.5, for more examples of general fractions.

The scope of a level change indicator, that is, the symbol(s) affected by it, is the next "item". An item is defined as any of the following groupings:

• An entire number, i.e. the initiating numeric symbol and all succeeding symbols within the numeric mode thus established (which would include decimal points, commas and simple numeric fraction lines).

• An entire general fraction, enclosed in fraction indicators (Section 11.3).

• An entire radical expression, enclosed in radical indicators (Section 11.5).

• An arrow (Section 11.6).

• An arbitrary shape (Section 11.7).

• Any expression enclosed in matching pairs of round parentheses, square brackets or curly braces.

• Any expression enclosed in the braille grouping indicators.

If none of the foregoing apply, the item is the next individual symbol.

Follow the provisions of Sections 4.2 and 4.3, Letters and Their Modifiers for the treatment of ligatured letters and the macron.

Use uncontracted braille for Old English, that is, English written before about 1100.

If a superscript or subscript appears within a grade 2 passage, it may need a grade 1 indicator.

In Middle English (c. 1100 to c. 1450) the use of contractions is optional. When contractions are used, have regard for spelling variations.

Use contracted braille for Early Modern English (c. 1450 to c. 1650) having regard for spelling variations.