opera:config ( Opera Preferences Editor – editor de configurações avançadas )
Agosto 4, 2008 Assim como existe o about:config do Firefox e do Seamonkey, em que se pode ajustar manualmente e profundamente o browser, o Opera tambem tem esta opção e so digitar opera:config na barra de endereços ( ou clicar nos links da tabela abaixo), e um leque de opções aparecerão, aqui e terreno para muitas horas de testes, o Opera e o browser mais avançado que existe, muitos programadores o usam e o pessoal do software livre chora por ele nao ter seu codigo fonte aberto, o que é uma pena. 
Opera Preferences Editor
The following are some useful opera:config entries.
| Entry | Description |
|---|---|
| BitTorrent|Enable | Enable file distribution using BitTorrent |
| ECMAScript | Available memory for JavaScript engine in kB |
| Highlighted Background | Background of text that is highlighted (after a search for instance) |
| Highlighted Background Unfocused | Background of text that is highlighted but has no focus |
| Highlighted Text | Color for text that is highlighted |
| Highlighted Text Unfocused | Color for text that is highlighted but has no focus |
| Selected Background* | Background of text that is selected |
| Selected Text* | Color for text that is selected |
| DiskCache|Size | Disk cache size in kilobytes |
| Frames Show Active | Show active frame with border |
| IFrames | Enable inline frames |
| ISP|Id! | Custom user agent substring User agent with custom string ‘Tamil’.
|
| Enable Content Blocker | Enable content blocker |
| Enable HostName Web Lookup | Use Web service to search if server name lookup fails |
| HostName Web Lookup Address | URL to Web search to use if server name lookup fails |
| Password Lifetime | Expiry time in minutes for master password in memory |
| Keep Entries Days | Days to keep entries in transfer manager |
| Addressbar Content Search* | Enable address bar content search |
| Allow Empty Workspace | Permits the last tab to be closed |
| Alternative Page Cycle Mode | Page cycle mode to use when cycling without displaying list of pages 0 = Recently used order 1 = Page bar order |
| Application Icon!, Windows | Full path to alternative icon file.See How to customize Opera icon & title? |
| Auto Dropdown | Allow auto completion dropdown |
| opera:config#UserPrefs|BrowserJavaScript | Whether to download and use the browser.js file. Enable by setting to 1, Opera will then download the file and set to 2. 0 = Never download or use 2 = Use and check for updates weekly 1 = browser.js signature invalid. On next check for update, a new browser.js will be downloaded and the value set to 2. |
| Cache Directory4 | Full path to cache directory |
| Check For New Opera | Keeps track of weekly check for new updates. Set to 0 to disable. See How to disable check for new version of Opera? |
| Color List Row Mode | Alternate background colours in lists. 1 = light blue (default) 3 = white (off) |
| Ellipsis In Center | Shorten button and tab names in the middle |
| Enable Edit Triple ClickUNIX | Handling double clicks in text edit fields. 0=Double-click text to select all 1=Double-click to select word, triple-click to select all |
| Enable Usage Statistics | Enable usage statistics sent to Opera. See Help us help you! for more info. |
| Enable config URL | Enable opera:config If you want to enable opera:config after disabling, close Opera, delete the line Enable config URL=0 in opera6.ini file. |
| History Navigation Mode | 1 = Automatic mode 2 = Compatible mode 3 = Fast mode Read more about history navigation. |
| Ignore Target | Disallow documents to create new windows/pages |
| Max Direct History Lines | Maximum numbers of typed-in URLs |
| Maximum Font Size | Do not allow fonts larger than value in pixels |
| Min Allowed GDI ResourcesWindows | Attempt to free system resources when low by value in percentage |
| Number Of Hits | Preferred number of search results per page. 0 = Use search engine’s own default Google only. To work in other engines, you have to append &x=%i to search engine address where x is search query name for number of results. For Google, http://www.google.com/search?q=%s&num=%i |
| Open Dialog Under MouseUNIX | Launch dialog where mouse pointer is already located |
| opera:config#UserPrefs|Scale | Default document zoom, in percent |
| Scroll Is Pan* | Enable grab-and-scroll mode. Alternatively, hold down CTRL+ALT and then click & drag the page to enable on the fly scroll. |
| Show Address In Caption! | Display URL rather than page title in title bar |
| Speed Dial Search Type | Set to 0 to remove Speed Dial search bar |
| Speed Dial State | Available options: 0 = Folded (“Show speed dial” message) 1 = Normal view 2 = Read Only (Hides “What is Speed Dial” & “Show speed dial” buttons) 3 = Disabled |
| Title | Main caption on title bar. Shows standard caption by default; Page title and Opera. Add “%s” to display Opera’s build number. See How to customize Opera icon & title? |
| Use Integrated Search | Use available multi-search field or “Find in page” field instead of dialog for “Find in page” |
| opera:config#UserPrefs|UserJavaScriptonHTTPS | Allow User JavaScript on secure servers. Use with caution. |
| Visited Pages* | Enables content search |
| VisitedLink|StrikeThrough | Strikethrough on visited links |
! = Requires Opera restart
* = Available in Opera 9.50
UNIX = Available only in UNIX
Windows = Available only in Window
