User's Manual

117
Disk caching works under the same principle as memory caching, but
instead of using high-speed SRAM, a disk cache uses conventional main
memory. The most recently accessed data from the disk (as well as
adjacent sectors) is stored in a memory buffer. When a program needs to
access data from the disk, it first checks the disk cache to see if the data
is there. Disk caching can dramatically improve the performance of
applications, because accessing a byte of data in RAM can be thousands
of times faster than accessing a byte on a hard disk.
ClearType
ClearType is a software technology developed by Microsoft that
improves the readability of text on existing LCDs (Liquid Crystal
Displays), such as laptop screens, Pocket PC screens and flat panel
monitors. With ClearType font technology, the words on your computer
screen look almost as sharp and clear as those printed on a piece of
paper.
ClearType works by accessing the individual vertical color stripe
elements in every pixel of an LCD screen. Before ClearType, the
smallest level of detail that a computer could display was a single pixel,
but with ClearType running on an LCD monitor, we can now display
features of text as small as a fraction of a pixel in width. The extra
resolution increases the sharpness of the tiny details in text display,
making it much easier to read over long durations.
Clipboard
The clipboard contains anything you copy from any application. You
can use it to copy and paste items and text within and between
applications.