In due course, we should install the relevant ISO 2- and 3-letter codes as the enumerated possible values . . .

The <title> element contains a heading or label for the main parts of a document such as <topic>, <section>, and <example> and for the display elements such as figure (<fig>) and <table>.

The <figgroup> element is used only for specialization at this time. »

Use the cross-reference (<xref>) element to link to a different location within the current topic, or a different topic within the same help system or DITA document. »

Use footnote (<fn>) to annotate text with notes that are not appropriate for inclusion in line or to indicate the source for facts or other material used in the text.

The phrase (<ph>) element is used to organize content for reuse or conditional processing (for example, when part of a paragraph applies to a particular audience). »

The code phrase (<codeph>) element represents a snippet of code within the main flow of text. »

The syntax phrase (<synph>) element is a container for syntax definition elements. »

The user interface control (<uicontrol>) element represents a button, entry field, menu item, or other object that allows the user to control the interface. »

The <menucascade> element is used to document a series of menu choices, or to show any choice on a menu from which the user needs to choose. »

The superscript (<sup>) element indicates that text should be superscripted, or vertically raised in relationship to the surrounding text. »

A subscript (<sub>) indicates that text should be subscripted, or placed lower in relationship to the surrounding text. »

The teletype (<tt>) element is used to apply monospaced highlighting to the content of the element. »

The bold (<b>) element is used to apply bold highlighting to the content of the element. »

The underline (<u>) element is used to apply underline highlighting to the content of the element. »

The italic (<i>) element is used to apply italic highlighting to the content of the element. »

The message phrase (<msgph>) element contains the text content of a message produced by an application or program. »

The <filepath> element indicates the name and optionally the location of a referenced file by specifying the directory containing the file, and other directories that may precede it in the system hierarchy. »

The user input (<userinput>) element represens the text a user should input in response to a program or system prompt. »

The system output (<systemoutput>) element represents computer output or responses to a command or situation. »

The <keyword> element identifies a keyword or token, such as a single value from an enumerated list, the name of a command or parameter, or a lookup key for a message (contrast with term).

The <option> element describes an option that can be used to modify a command (or something else, like a configuration). »

When referencing the name of an application programming interface parameter within the text flow of your topic, use the parameter name (<parmname>) element to markup the parameter. »

The <apiname> element provides the name of an application programming interface (API) such as a Java class name or method name. »

The window title <wintitle> element represents the title text that appears at the top of a window or dialog, and applies to wizard titles, wizard page titles, and pane titles. »

The message number (<msgnum>) element contains the number of a message produced by an application or program. »

The variable name (<varname>) element defines a variable that must be supplied to a software application. »

The command name (<cmdname>) element specifies the name of a command when it is part of a software discussion. »