What is a triple click mouse...

A triple-click is the action of clicking a computer mouse button three times quickly without moving the mouse. Along with clicking and double-clicking, triple-clicking allows three different actions to be associated with the same mouse button. Criticism of the double-click mechanism is even more valid for triple-clicks. However, few applications assign critical actions to a triple click.

Examples of usage.

On text
In most text processing programs and edit controls triple-clicking with the primary mouse button (the left button for right-handers) on the text selects the entire line. If the edit control is not multiline, the entire text is selected.

 Microsoft Word

A triple-click within a paragraph in the text area selects the entire paragraph. A triple-click in the left margin (when the mouse pointer is an up-and-to-the-right arrow) selects the entire document.

 Microsoft Works Word Processor

A triple-click within a paragraph in the text area selects the line. A triple-click in the left margin (when the mouse pointer is an up-and-to-the-right arrow) selects the entire document.

Corel WordPerfect

A triple-click within a paragraph in the text area selects the sentence. A triple-click in the left margin (when the mouse pointer is an up-and-to-the-right arrow) selects the entire document.

 Outlook and Outlook Express

A triple-click within a paragraph in the text area selects the entire paragraph.

 Text Fields

A triple-click in a text entry field (a text entry widget) selects the entire line of text. This is a standard feature of the widgets themselves, so works in most applications, on Linux as well as Windows.

Browsers

Firefox 3.0

In Firefox 3.0 a triple-click will highlight all text within any single HTML element on the page.

 Firefox 3.5

In Firefox 3.5 a triple-click selects the entire paragraph. If the triple click is inside a content editable element, and is on the first paragraph. It selects the text, and the opening tag of the contentEditable element.

 Internet Explorer 7

In Internet Explorer 7 a triple-click will highlight all text within any single HTML element on the page. If there is an article with multiple paragraphs one can highlight an entire paragraph with a triple-click.

 Opera

In Opera a triple-click will select all text within a sentence while automatically popping up a list of commands to apply to the selected text. A quadruple-click will select all text within a single paragraph while keeping the aforementioned popup open.

 Safari 3.0

In Safari 3.0 a triple-click will highlight all text within any single HTML element on the page. If there is an article with multiple paragraphs one can highlight an entire paragraph with a triple-click.