Typing and styles

NeoMath’s visual editor decides the role of each typed character by itself. The rules below are the ones the editor applies today and are checked by automated tests.

Automatic classification#

In the Math style (the default):

Character	Role
digit 0 to 9	number (mn)
any letter (Latin, Greek…)	identifier (mi), in italics
the rest (+ = ( ) . , ∞…)	operator (mo)

Automatic swaps in operators:

You type	It becomes
-	− (minus sign, U+2212)
*	· (multiplication dot)
'	′ (prime)

A space is only inserted in the Text style; in the others it is ignored, because math spacing is computed by NeoMath.

Typing styles#

Style	Effect on each character
Math	automatic classification
Text	text (mtext), including spaces and numbers
Function	letters in upright type
Variable	letters in italics, by preference
Greek	Latin letters become Greek by the map below
Vector-Matrix	letters and digits in bold

With a selection, applying a style rewrites the selected characters, including inside fractions and indices.

Greek map#

Latin	a	b	g	d	e	z	h	q	i	k	l	m
Greek	α	β	γ	δ	ε	ζ	η	θ	ι	κ	λ	μ

Latin	n	x	o	p	r	s	t	u	f	c	y	w
Greek	ν	ξ	ο	π	ρ	σ	τ	υ	φ	χ	ψ	ω

Uppercase letters follow the same map. j and v have no pair and stay as they are. Ctrl+G applies the map to a single letter and then turns itself off.

How the equation becomes MathML#

1. Consecutive digits (and a dot between two digits), with the same variant and color, form a single number: 30.5.
2. Consecutive text with the same variant and color forms a single mtext.
3. Consecutive letters form a function when the longest prefix of two or more letters is a known name (sin, log, lim…); the function comes out in upright type.
4. An upright variant comes out as mathvariant="normal"; bold comes out as mathvariant="bold".
5. Own color comes out as mathcolor.
6. Superscripts and subscripts use the previous element as the base.

Recognized function names#

sin, cos, tan, cot, sec, csc, arcsin, arccos, arctan, sinh, cosh, tanh, coth, log, ln, lg, exp, lim, max, min, sup, inf, det, dim, ker, deg, gcd, arg, hom, Pr, liminf, limsup, mod. NeoMath also knows the names in Portuguese, such as sen.

Size of a part#

With a selection, Ctrl+B›1 to Ctrl+B›7 wrap the part in a preference size (full, script, subscript, symbol, subsymbol, user 1 and user 2), stored as <mstyle neo:tamanho="…">. Ctrl+B›0 removes it.