Firefox's about protocol

Mozilla browsers support some special URL addresses starting with about:. You can enter them in the address bar of your browser to see the effect.

About:-displays the content on the "Help-> about" page.
About: About-list all about: URLs. (Firefox cannot be used, Mozilla Suite only ).
About: blank-blank page, which can be set as the browser homepage.
About: Bloat-displays the bloatview output, which is disabled in the official release.
About: buildconfig-displays the options for compiling the browser used.
About: cache-displays cache statistics and locations of Hard Disk caches.
O about: cache? Device = memory-list cache content in the memory.
O about: cache? Device = disk-list the cached content of the disk.
About: cache-entry-displays the details of a cache. Used in the about: cache link. parameters are required.
About: config-interface for modifying user preferences (in fact, the content is included in prefs. JS ).
About: List of credits-Mozilla project contributors.
About: logo-display Mozilla's icon (Mozilla Suite only ).
About: this feature is not included in the kitchensink-Mozilla series, but can be installed with extensions.
About: License-display Mozilla Public License and Netscape Public License. (gecko 1.8 and later versions only ). Now Firefox should display the MPL, GPL, and lgpl protocols.
About: Mozilla-one of the famous books of Mozilla.
About: plugins-list all plug-ins installed in the system.

The strange term in it can continue Google, which is quite interesting. However, config, plugins, and cache are commonly used in addition to blank. Config is often used for configuration. plugins can be used to display the currently installed plug-ins. The cache can view the cached content, and it also provides links for saving, it is difficult to find the content that has been read by the browser directly in the cache directory.