15 placeholders and horizontal summaries

15.1 placeholder

Wildcards are mainly used in textbooks. overall Usually they are in the place of numbers, numbers or other symbols that need to be figured out. Because of your They leave a variety of uses and manifestations do not define themselves conclusively. It will only be here exemplified how wildcards are displayed can.

Since there are no symbols or procedures for wildcards. have been transferred, transferors must have their chosen each in braille technical notes explain.

It is advisable to pay attention to the choice of symbols, that they handled the elements in terms of braille technology can be who they represent. For example Placeholder for operation symbols possibly also like operation symbols to one space and to the next Connect characters.

15.2 Horizontal summaries and lying brackets

chart
&3 : indicator sign for horizontal summaries
&,7'''7 Discontinuation sign for horizontal summaries with Explanation as text
&<'''> Discontinuation sign for horizontal summaries with Explanation as mathematical Expression

The inkprint marks several terms to explain a mathematical expression often by lying brackets or by typographic highlighting (Color, bold or similar).

Such summaries may be used in mathematics be reproduced as follows:

In many cases, playback is possible with this technique possible, other - not standardized - techniques can However, be more convenient, such as the insertion of the Explanation reduces the clarity - and straight therefore the goal of the abstract in the inkprint missed. Examples of alternative techniques are: