Nokia 9110i 사용자 설명서

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4.2.3  Optimize for Size
The size of the content is critical. If you have large decks (listings, large tables, etc.), consider splitting
them in multiple parts for faster download.
As for the total download time, some studies place an upper limit for acceptable delay to 10 to 15
seconds, including all images, on a PC-based browser. It is highly recommended to have a response
time (excluding connection time) less than 10s in mobile environment.
4.2.4  Choose Descriptive Card Titles
It is very useful to give a descriptive name for the card. It might be a good idea to start the title with
your service’s name and keep the total length of the title short.
It also pays to use meaningful URLs since the user sees the URL of the currently selected link on the
screen and can use it as a navigational help, especially when images have not been loaded.
4.2.5  Pay Attention to the First Screenful
Because of 9110i's form factor, the first (topmost) screenful of any page is the most important one. All
of the often-used navigational links, search fields, login screens, and bulk of the information should
reside there if at all. The user is then able to navigate forward before the rest of the card has been
loaded, and the user does not have to scroll the card.
Avoid wasting the top of the page for banner advertisements or non-informative graphics. It is better
to place the advertisements at the left or right edges than on the top.
4.2.6  Do Not Use Absolute Values for the Screen Size
When using images the use of absolute values (in pixels) is not recommended. Sizes should be specified
as percentages from the total width or height.
4.2.7  DO-elements Usage
Always use descriptive and short labels for all DO-elements. Favor local DO-elements instead of
anchored links that are totally out of surrounding context. Global DO-elements should be used only
when especially needed at the end of the card. Always include prev element in every card to enable
backward navigation.
4.3  Pictures, Tables and Colour
4.3.1  Avoid Useless Images
Downloading of images takes time, and many users may switch the loading of images off for more
speed. Try to optimize the size of images. If you have large pictures on your site, consider using
thumbnails for the image index.
Always give an alternative text (using the ALT attribute of the IMG element) for images that convey
information. Always use a null alternative text (ALT=””) for images which do not convey information, or
are used for page layout or decorative purposes only.