Nesting structures also disables the displayed state, i.e. The displayed state is enabled when the structure is in an displayed rather than inline equation. In the displayed state, they are bigger and take more vertical space. Some structures are rendered in a different way depending on whether they are displayed or not. The Table 3.6 summarizes the variety of mathematical structures supported by the Equation Editor. It is, of course, possible to nest structures into each other.
You may use arrow keys or mouse to navigate between the components of the structure. When a structure is inserted, a number of empty boxes appear, which serve as placeholders for material to be inserted into the structure. These can be inserted using the mathematical toolbar, or by typing their LaTeX equivalent. Mathematical formulas may contain, besides simple structures like variables, operators and symbols, more complex structures like fractions, radicals, integrals etc. Operators that do have such key, such as ‘ < ’, ‘ = ’, ‘+’, etc., as well as punctuation symbols like ‘,’, ‘ ’, ‘!’ etc., can be inserted just by typing their corresponding key. The Table 3.5 shows only special operators that do not have a corresponding key on a regular English keyboard. The Table 3.2, Table 3.3, Table 3.4 and Table 3.5 summarize the Greek letters, operators and symbols supported by the Equation Editor. For example, after typing ‘ \equiv’ on the keyboard, the symbol is inserted at the cursor position. TeX/LaTeX users, that are familiar with macro names for symbols and operators, may insert these by typing the macro names. The and button groups may be used to insert mathematical operators and symbols, respectively. The lowercase Greek letters get the variable class by default, while the uppercase letters get the dimension class by default. Note that Greek letters are in fact normal mathematic text. The and button groups may be used to insert lowercase and uppercase Greek letters, respectively. The equation editor can insert a variety of operators and symbols. You cannot, however, insert line breaks into the paragraph. You may apply all properties applicable to normal paragraphs, such as formatting, adding inline graphics, or even inline math. It is also possible to insert regular paragraph text into the equation, using toolbar button. If you type a letter, the class is set to variable, if you type a digit, the class is set to number. Note that when you start typing text, the class is selected automatically. Then you may assign it a class using the generic class mechanism, see Chapter 5.
If you need to use category that is not listed in the table, you may use the generic category “Generic Text”. Table 3.1 Categories of Mathematical Text See Chapter 5 for managing visual styles of elements. Each category gets some default typographic style, which can be overridden if necessary. The text is classified into several semantic categories, described in Table 3.1. Text may denote variables, constants, numbers, functions etc. The most simple material that can be inserted into an equation is text. You may insert either an inline equation using the toolbar button, which does not interrupt the flow of words in a paragraph, such as e i π + 1 = 0, or a displayed equation using the toolbar button, that is placed on its own line, separated from its neighborhood by a vertical space, such asįor more information about displayed equations, see Section 3.7. The RichDoc framework contains an embedded equation editor, which can be used to insert equations and other mathematical structures into the document.