If a computer-displayed image is interlaced, then it is rendered in alternating horizontal lines.
For example, browsers display interlaced GIFs in alternating passes, skipping every other line and rendering a kind of blurry image first and then sharpening it on subsequent passes. This is useful if you’d like your viewers to get a general idea of the image while they are downloading it. Interlacing for GIFs was designed to make bigger images quicker to download, but the problem is that an interlaced GIF actually has a larger file size than a non-interlaced GIF, so use this method cautiously.
The domain name system (DNS) is an internet service that translates domain names (like wired.com) into IP addresses (like 126.96.36.199).
We use domain names because people can remember words better than numbers, but web servers still need the IP numbers to access the page. Every time you use a domain name, a DNS server must translate the name into the corresponding IP address.
To render a graphic means to draw a real-world object as it actually appears. There are two widely used rendering processes:ray tracing and scanline rendering. Scanline rendering creates images one vertical line at a time, while ray tracing renders object-by-object. In general, ray tracing produces better results, but scanline rendering is useful in animation, where the image quality of each individual frame isn’t as important as the finished product.
WAP, which stands for the wireless application protocol, is a standardized, device-independent protocol that defines the development and operating environment for wireless telephones, pagers and handheld devices. WAP utilizes a lighter version of the TCP/IP protocol for transmission between devices.
Today, we’re talking about how to specify into which frame you’d like your linked documents to load. If you’re a little fuzzy on the concept of frames, you should go back and read the first piece in this series, where we explain how to Create Simple HTML Frames in the context of a Midwestern picnic. Go ahead, we’ll wait….
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