# Glossary

Tip: If a term is not explained here, try searching for it in Opera's on-line knowledge base.

Term | Explanation
--- | ---
Accessibility features | Functions (for example zoom and keyboard shortcuts) that make software easier to use
Address bar | The bar where you enter Web addresses (URLs)
Bookmark | Shortcut (stored in the Bookmark panel) that takes you to a Web page
Browser | Computer software used to visit Web sites
Certificate | Used as an "ID card" between you and a secure Web service
Clipboard | Temporary storage place for text, images, or other information you copy and paste
Cookie | Small file saved on your computer by a Web site in order to remember you
DES | Strong method of data encryption
Desktop | The area behind all the applications on your computer screen
Download | To transfer a file from a remote computer to your computer
Double-click | To rapidly click your mouse button twice
Drag and drop | Moving something from one place to another using the mouse
Frames | Small Web documents that together build a full Web page
History | Panel in Opera containing a backlog of Web pages you have visited
IRC | Internet Relay Chat protocol and universe of people chatting
Java | Programming language developed by Sun Microsystems
JavaScript | Non-standardized programming language used to make Web pages more dynamic
Messages | Collective term for e-mail messages and news articles
MIME | Method used by servers to identify files sent to your computer
National domain | Domains such as .no for Norway and .jp for Japan
Panels | The area on the left of the Opera application window with the Bookmarks, Mail, and Contacts icons
Personal bar | Toolbar with quickly accessible links and search engines
Pop-up | A new window which "pops up" on your screen (usually log-in or advertisement)
Preferences | Options you can set in Opera
Protocol | A set of rules that define how computers communicate
Proxy server | A computer that translates information between your computer and a Web server
Right-click | To click the right button on your mouse
RSS | Really Simple Syndication, protocol for distributing newsfeeds from the Web
Server | A computer that can send Web pages, e-mail, news, etc. to your computer
Service provider (ISP) | The organization that hosts your Internet services
Session | A saved representation of pages and application windows
Skin | Graphics that change or liven up the user interface
Source | A document that describes the content of a Web page
SSL | Security Socket Layer (security protocol used on the Internet)
Style sheet (CSS) | A file that describes layout, fonts, and colors on a Web page
Top-level domain | Domains such as .org, .net, and .com
TLS | Transport Layer Security (security protocol used on the Internet)
Upload | To transfer a file from your computer to a remote computer
User interface | Menus, dialogs, buttons, and input fields used to interact with software
View | Folder-like access point to a group of messages that have something in common
Wand | Opera's password manager for automatic log-in to Web sites

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