Number option: show value.
String option: show value.

Set string or number option to {value}.
For numeric options the value must be given in decimal. The old value can be inserted by typing <Tab>.

Add the {value} to a number option, or append the {value} to a string option. When the option is a comma separated list, a comma is added, unless the value was empty. If the option is a list of flags, superfluous flags are removed. When adding a flag that was already present the option value doesn't change.

Multiply the {value} to a number option, or prepend the {value} to a string option. When the option is a comma separated list, a comma is added, unless the value was empty.

Subtract the {value} from a number option, or remove the {value} from a string option, if it is there. If the {value} is not found in a string option, there is no error or warning. When the option is a comma separated list, a comma is deleted, unless the option becomes empty. When the option is a list of flags, {value} must be exactly as they appear in the option. Remove flags one by one to avoid problems.

Show Browser Preferences
You can change the browser preferences from this dialog. Be aware that not all Firefox preferences work, because Vimperator overrides some key bindings and changes Firefox's GUI.

Opens about:config in the current tab where you can change advanced Firefox preferences.

Change any Firefox {preference} (those in the about:config window). You can also reset/delete those preferences with :set! {preference}&.

Define when tabs are automatically activated. Available items:

Items which are completed at the :[tab]open prompt. Available items:

The order is important, so :set complete=bs would list bookmarks first, and then any available quick searches. Add "sort" to the 'wildoptions' option if you want all entries sorted.

Sets the default search engine. The default search engine is used in the :[tab]open [arg] command if [arg] neither looks like a URL or like a specified search engine/keyword.

Set the external text editor Sets the editor to run when <C-i> is pressed in INSERT and TEXTAREA modes.
Warning: Vimperator will not behave correctly if the editor forks its own process, such as with gvim without the -f argument.

(default: //*[@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @class='s'] | //input[not(@type='hidden')] | //a | //area | //iframe | //textarea | //button | //select | //xhtml:*[@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @class='s'] | //xhtml:input[not(@type='hidden')] | //xhtml:a | //xhtml:area | //xhtml:iframe | //xhtml:textarea | //xhtml:button | //xhtml:select)

The XPath string of hintable elements activated by ;.

(default: z-index:5000; font-family:monospace; font-size:12px; color:white; background-color:red; border-color:ButtonShadow; border-width:0px; border-style:solid; padding:0px 1px 0px 1px; position:absolute;)

CSS specification of hints

Foreground color of a link during hint mode.

Background color of a link during hint mode.

Foreground color of the current active link during hint mode.

Background color of the current active link during hint mode.

Change the hint matching algorithm during hint mode. Possible values:

A regex which defines the word separators which are used for the 'hintmatching' types 'wordstartswith' and 'firstletters' to split the words in the text of a link.

Show the current window fullscreen. Also hide certain GUI elements like the statusline.

Show or hide certain GUI elements like the menu or toolbar. Supported characters:

You can also hide the tab bar with :set showtabline=0.

Automatically follow non unique numerical hint after 'hinttimeout' milliseconds.
Set to 0 (the default) to only follow numeric hints after pressing <Return> or when the hint is unique.

(default: //*[@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @class='s'] | //input[not(@type='hidden')] | //a | //area | //iframe | //textarea | //button | //select | //xhtml:*[@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @class='s'] | //xhtml:input[not(@type='hidden')] | //xhtml:a | //xhtml:area | //xhtml:iframe | //xhtml:textarea | //xhtml:button | //xhtml:select)

XPath string of hintable elements activated by 'f' and 'F'

Number of Ex commands and search patterns to store in the commandline history.

Highlight previous search pattern matches

string (default: color: black; background-color: yellow; padding: 0; display: inline;)

CSS specification of highlighted search items

Ignore case in search patterns.

Show where the search pattern matches as it is typed.
NOTE: Incremental searching currently only works in the forward direction.

Use Insert mode as the default for text areas. Makes Vimperator work in a way that Insert mode is the default mode for text areas. Useful if you want to use Vimperator as a modeless editor, keeping the known Firefox interface for editing text areas.

Determines when the last window will have a status line. Possible values:

Limit the search to hyperlink text. This includes (X)HTML elements with an "href" atrribute and XLink "simple" links.

Pause the message list window when more than one screen of listings is displayed

Define which ex commands output the result in a new tab automatically. You can also use :tab command to manually output a command in a new tab.

The possible values:

Patterns to use when guessing the 'next' page in a document sequence. Each pattern, in order, is matched against all links in the page with the first match being used. The patterns are case insensitive regular expressions.

Desired info on :pa[geinfo]. Available items:

The order matters.

Define where to show requested popup windows. Does not apply to windows which are opened by middle clicking a link, they always open in a new tab. Possible values:

Speed up first time history/bookmark completion

History access can be quite slow for a large history. Vimperator maintains a cache to speed it up significantly on subsequent access. In order to also speed up first time access, it is cached at startup, if this option is set (recommended).

Patterns to use when guessing the 'previous' page in a document sequence Each pattern, in order, is matched against all links in the page with the first match being used. The patterns are case insensitive regular expressions.

Number of lines to scroll with C-u and C-d commands. The number of lines scrolled defaults to half the window size. When a {count} is specified to the <C-u> or <C-d> commands this is used to set the value of 'scroll' and also used for the current command. The value can be reset to half the window height with :set scroll=0.

Show the current mode in the command line.

Show the destination of the link under the cursor in the status bar Also links which are focused by keyboard commands like <Tab> are shown. Possible values:

Control when to show the tab bar of opened web pages. Possible values:

Override the 'ignorecase' option if the pattern contains uppercase characters. This is only used if the 'ignorecase' option is set.

Set the search engines which can be used for completion suggestions. Add "S" to the 'complete' option if you want use this feature.

Warning: This feature could make tab-completion slower because it needs to wait for changes, so use it only if you have a fast internet connection.

Change the title of the browser window. Vimperator changes the browser title from "Title of web page - Mozilla Firefox" to "Title of web page - Vimperator".
If you don't like that, you can restore it with: :set titlestring=Mozilla Firefox.

Show current website with a minimal style sheet to make it easily accessible. Note that this is a local option for now, later it may be split into a global and :setlocal part

Define which type of messages are logged. When bigger than zero, Vimperator will give messages about what it is doing. They are printed to the error console which can be shown with :javascript!. The highest value is 9, being the most verbose mode.

Use visual bell instead of beeping on errors. For now you can't turn off both, this will hopefully change.

The CSS style to use for the visual bell. Set this to the empty string if you want no bell at all.

Define how command line completion works. It is a comma-separated list of parts, where each part specifies what to do for each consecutive use of the completion key. The first part specifies the behavior for the first use of the completion key, the second part for the second use, etc.

These are the possible values for each part:

A list of words that change how command line completion is done. Currently only one word is allowed: