The PowerBook G3 is a line of laptop Macintosh computers produced by Apple Computer between 1997 and 2001. It was the first laptop to use the PowerPC G3 (PPC740/750) series of microprocessors. It was succeeded by the Titanium PowerBook G4 line in 2001, which used the PowerPC G4 (PPC74xx) series of microprocessors.
PowerBook G3 (Kanga)
The first Macintosh PowerBook G3, code-named "Kanga," was introduced in November 1997. At the time of its introduction, the PowerBook G3 was advertised as the fastest notebook computer available (a title formerly held by its predecessor, the 240MHz PPC-603ev-based PowerBook 3400c). This model was based on the PowerBook 3400c, and was unofficially known as the PowerBook 3500. It used the same case as the 3400c, and a very similar motherboard. The motherboard was upclocked from 40MHz to 50MHz, resulting in some incompatibility with older 3400 RAM modules. Other changes to the motherboard included doubling the on-board RAM from 16 MB to 32 MB, and a faster version of the on-board Chips and Technologies graphics controller. The G3 made the Kanga more than twice as fast as a 3400c, and the improved graphics controller allowed it to refresh the screen 74 percent faster.
In 2015, XYZ.com proposed that ICANN allow it to ban thousands of potential .xyz domain names from registration by global registrants in order to comply with censorship demanded by the People's Republic of China. XYZ.com hopes to become an officially recognised registry in China, which would allow it to directly offer domains to Chinese customers.
In November 2015, .xyz reached 1.5 million domain name registrations, possibly boosted in part by Google's decision to use abc.xyz for its corporate (Alphabet Inc.) website. However, domain name registry VeriSign and others have claimed that domain name registrar Network Solutions gave away possibly hundreds of thousands of these names by placing them into customer accounts on an opt-out basis.
As of January 2016, .xyz was the 6th most registered domain name on the internet.
After opener's one of a suit (X), partner's one of a suit response (Y) and opener's 1-level rebid (Z) (a very common sequence), 2♣ from opener's partner forces 2♦ from opener. Holding a weak hand with diamonds, one can now pass. Other bids are invitational, describing also the nature of the hand. A 2♦ rebid by responder, however, is game forcing with any hand. Responder may also jump to 3 of any suit (except 3♣, which is signoff) to show a game-forcing hand with a good suit or, if the jump is in one of opener's suits, two of the top three honors.
Although it is mandatory in the XY Notrump form of the convention to complete the relay 2♣ to 2♦, when Z was a suit, opener may be unlimited. In such a case it is acceptable, if opener has too good a hand to risk being dropped in 2♦ to bypass the relay and make a (forcing) bid.
It is also customary to retain the convention in the face of certain competitive actions, for example after a double by opener's LHO, or a negative double by partner. After an overcall by RHO, assuming that the bidding has not gone past 1NT, the convention is still on (for example after 1♦ pass 1♥ 1♠ X where X is a Support Double).