Instance is a copy of  a library item dragged on to the stage. You can give the instance a name, and target it using the actionscript.

Portable Network Graphics (PNG) is an image format offering lossless compression and storage flexibility. The MIDP
specification requires implementations to recognize certain types of PNG images.

Contraction derived from the opposite processes of compression and expansion. Part of the PCM process whereby analog signal values are logically rounded to discrete scalestep values on a nonlinear scale. The decimal step number is then coded in its binary equivalent prior to transmission. The process is reversed at the receiving terminal using the same nonlinear scale. Compare with compression and expansion.

The running of a data set through an algorithm that reduces the space required to store or the bandwidth required to transmit the data set. Compare with companding and expansion.

It is the base, raw material to be used in producing an item; also painting, sculpture etc. in unfinished, 'roughed out' stage.

These are small groups of cells distinguishable, in appearance or histochemically, from the surrounding tissue: indicative of an early stage of a lesion that may lead to the formation of a neoplastic nodule.