C

canonical format

A standard way of writing a formula. For example, two formulas, such as 9 + x and x + 9, are said to be equivalent because they mean the same thing; however, the second one is in "canonical form" because it is written in the usual way, with the highest power of x first. Usually, there are fixed rules you can use to decide whether something is in canonical form. Things in canonical form are easier to compare.

This table describes the different field types and their canonical formats. Note that values surrounded by square brackets are optional. Currency and grouping symbols are not valid in canonical format.

Field type

Description

Canonical format

Example

Date fields

An ISO-8601/XFA date string

YYYY[-MM[-DD]]

YYYY[MM[DD]]

2005-07-04

20050704

Date/time fields

An ISO-8601/XFA date time, which is the concatenation of a valid ISO-8601/XFA date string and a valid ISO-8601/XFA time string with the letter ' T' as a separator between the date and time string

2004-07-04T10:11:12+05:00

20040704T101112

Numeric fields

A sequence of ASCII digits consisting of an integral part, a decimal point, a fractional part, and optionally, an e (or E) and a signed exponent part

12

1.234

.12

1e-2

1.2E3

Text fields

Any sequence of Unicode characters without using spaces

A1B2C3

Display Pattern: A9A 9A9

Formatted Value: A1B 2C3

Time fields

An ISO-8601/XFA time string

HH[:MM[:SS[.FFF][Z]]]

HH[:MM[:SS[.FFF][+HH[:MM]]]]

HH[:MM[:SS[.FFF][-HH[:MM]]]]

HH[MM[SS[.FFF][Z]]]

HH[MM[SS[.FFF][+HH[MM]]]]

HH[MM[SS[.FFF][-HH[MM]]]]

10:11:12.123+05:00

101112+0500

10:11:12Z

10:11

10

certificate

A public key that corresponds to a credential (private key) used in encryption and signing operations. See also Adobe certified document .

client

The requesting program or person in a client/server relationship. A web browser is an example of a client application.

credential

A private key used to establish identity in decryption and signing operations.

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