Illegal Operation

When a program on your computer has an error, you may see a message pop up on the screen saying, "Illegal Operation". This is a rather tactless way of saying something went wrong with the program that was running. It could also be a fault with the operating system itself. The problem with the phrase "Illegal Operation" is that it seems to put the blame on you, the user. The fact is, the error was most likely caused by a bug in the program, and is certainly not your fault.

CAB

Cabinet format. CAB is a compressed file format developed by Microsoft and used in many of their applications. Internet Explorer, for example, can use CAB to download large Java applets from the Internet and save them to the local hard drive.

PPC

Pay per click, or PPC, is an advertising technique used on websites, especially search engines. Pay per click advertisements are usually text ads placed near search results; when a site visitor clicks on the advertisement, the advertiser is charged a small amount. Variants include pay for placement and pay for ranking. Pay per click is also sometimes known as Cost per click or CPC.