A human engine has a torque curve similar to that of a steam engine, more or less, which is to say that it is flat until a certain critical rpm, at which point it begins to drop off, because the energy used in accelerating and decelerating massy components (legs) begins to take up all the energy produced.
Asterisk is known to run on many OS platforms. However, Linux is the main platform for development and Digium hardware support. If you are running VoIP only, or if you are comfortable with using external media gateways to connect conventional telephone equipment, then you have more systems to choose from, like FreeBSD, Mac OS X and Solaris.
The following example retrieves all product information stored in the Product table: Copy. When qualified with a table or view name, an asterisk (*) is resolved as a reference to all the columns in the table or view. The following example uses the asterisk to reference all the columns in the Product table: Copy. When an asterisk (*) is used, the order of the columns in the result set is the same as the order in which they were specified in the CREATE TABLE, ALTER TABLE, or CREATE VIEW statements.