C-HTML
Encyclopedia
C-HTML also called i-mode-HTML, is a subset of HTML
HTML
HyperText Markup Language is the predominant markup language for web pages. HTML elements are the basic building-blocks of webpages....
for small information devices, such as first generation smart phones and PDAs
Personal digital assistant
A personal digital assistant , also known as a palmtop computer, or personal data assistant, is a mobile device that functions as a personal information manager. Current PDAs often have the ability to connect to the Internet...
, such as DoCoMo
DoCoMo
DoCoMo is a trademark of the NTT DoCoMo corporation of Japan, used in its home market and in India in partnership with Tata Teleservices. It is an acronym of the phrase "Do communications over the mobile network."See also the following mobile phone operators:...
's i-mode
I-mode
NTT DoCoMo's i-mode is a mobile internet service popular in Japan. Unlike Wireless Application Protocol, i-mode encompasses a wider variety of internet standards, including web access, e-mail and the packet-switched network that delivers the data...
mobile phone
Mobile phone
A mobile phone is a device which can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile network operator...
s used in Japan. C-HTML adds several features not found in standard HTML, notably accesskeys, phone number shortcuts for links, and emoji
Emoji
is the Japanese term for the picture characters or emoticons used in Japanese electronic messages and webpages. Originally meaning pictograph, the word literally means e "picture" + moji "letter". The characters are used much like emoticons elsewhere, but a wider range is provided, and the icons...
pictorial characters as locally extended Shift JIS, all concepts borrowed from HDML
Handheld Device Markup Language
The Handheld Device Markup Language is a markup language intended for display on handheld computers, information appliances, smartphones, etc.. It is similar to HTML, but for wireless and handheld devices with small displays, like PDA, mobile phones and so on.It was originally developed in about...
/WML
Wireless Markup Language
Wireless Markup Language , based on XML, is a markup language intended for devices that implement the Wireless Application Protocol specification, such as mobile phones. It provides navigational support, data input, hyperlinks, text and image presentation, and forms, much like HTML...
.
Because small devices such as cellular phones have hardware restrictions such as lower memory, low power CPUs with limited or no storage capabilities, small mono-color display screens, single-character fonts and restricted input methods (the absence of a keyboard or a mouse), there is a need for a simpler form of HTML.
C-HTML does not support tables, image maps, multiple fonts and styling of fonts, background colors and images, frames, style sheets, and is limited to a monochromatic display.
The language is defined so that all the basic interactive operations can be done by a combination of four buttons and not by two-dimensional cursor movement: cursor forward, cursor backward, select, and back/stop. Functionality requiring two-dimensional cursor pointing, like image maps, are excluded from C-HTML.
See also
- Comparison of document markup languagesComparison of document markup languagesThe following tables compare general and technical information for a number of document markup languages. Please see the individual markup languages' articles for further information.-General information:...
- Information applianceInformation applianceIn general terms, an information appliance or information device is any machine or device that is usable for the purposes of computing, telecommunicating, reproducing, and presenting encoded information in myriad forms and applications....
- List of document markup languages
- MicrobrowserMicrobrowserA mobile browser, also called a microbrowser, minibrowser, or wireless internet browser , is a web browser designed for use on a mobile device such as a mobile phone or PDA. Mobile browsers are optimized so as to display Web content most effectively for small screens on portable devices...