# Numbers

Merops contains over 220 customizable rules relating to the presentation of numbers and formulae, as well as terms relating to numbers, such as times, dates, units and currency.

The information below describes just a small percentage of the rules Merops can apply to numerical terms.

## Basic numbers

### Punctuation and spacing

Merops can automatically standardize the punctuation and spacing of:

• large numbers (e.g. 1,234,567)
• ratios
• number grouping after decimal point (0.000 01)

### Characters

Merops can automatically standardize characters such as:

• decimal point character
• en rule/hyphen in ranges
• the prime character

### Words vs figures

Merops can convert between words and figures, based on context and size, for example:

• 3 three
• 3 (in a French sentence) trois
• twenty 20
• 3rd third
• 20 (at sentence start) Twenty
• 20 million 20,000,000
• tenfold 10-fold
• less than <

### Context

Many of these rules are context-specific. For example, the number 1000 in general text, but 1 000 in tables. Also, Merops is clever enough to avoid making changes to numbers that are not counts or ranges (e.g. telephone numbers).

## Currency

Merops can standardize the presentation of currency.

For example:

• standardization of words/figures (ten pounds sterling £10)
• standardization of ranges (\$4-6 \$4-\$6)
• alerts on the potentially ambiguous use of \$ or 'dollar'

## Mathematics

In technical documents it is critical that mathematical terms are presented consistently. Merops contains rules to correct author discrepancies, and converts between alternative math formats.

### Algebra and arithmetic

Merops standardizes symbols such as Greek letters and operators, e.g.:

• 20 +/- 12 20 ± 12
• 2 X 4 2 × 4

Merops standardizes the formatting of functions, variables and operators:

• ln(sin xmax2) ln(sin χmax2)
• a+b =c a + b = c

### MathType

Merops can convert:

• simple MathType equations to normal text;
• MathType equations to Microsoft Word equations;
• displayed text equations to Microsoft Word equations.

These equations can be encoded as MathML in your XML file.

### Statistics

Merops can standardize the presentation of statistical variables. For example:

• Student t test Student’s t-test
• F(1, 24) = 2.36 F1,24 = 2.36
• Anova ANOVA
• p >0.01 P > .01

## Time & date

Merops can standardize the presentation of times and dates, e.g.:

### Times

• 4pm 16.00 hours
• 4pm 4 p.m.

### Dates

• Sept. 24, 1978 24th September 1978
• BC B.C.
• nineteenth century 19th century
• 11/11/2014 11/11/14

## Units

Merops identifies and standardizes the case, formatting, and spelling of SI and Imperial units of measurement.

### General rules

Merops can automate conversions between unit standards, e.g.:

• 40–100ug/ml 40–100 µg mL–1
• 5kg–10kg 5–10kg

### Conversions

Merops can automatically convert units from Imperial to metric, or Fahrenheit to Celsius, or vice versa.

### Specific preferences

Merops has over 50 preferences for individual units and contexts. For example:

• 99.5% 99.5 percent
• 10 seconds 10 s
• 2 hours 2 hrs

Merops can standardize certain units in different contexts, i.e. general text, tables, parentheses, compound units, table captions/legends, and footnotes.