Copies of this version are made available periodically. Image display techniques which retain their state information to any other computer running this version have been developed. Since then, we frequently encountered the conflict between the desire to develop new ideas and capabilities and the desire to provide to the users a stable, reliable software package.
Some new capabilities are simply new programs added with little or no effect on current AIPS usage.
However, since AIPS is in many areas a tightly connected system, some new ideas are potentially disruptive since they affect, for example, how all interferometer data are calibrated or how image models are computed. Periodically, a copy of CVX is frozen in tar files and made available for down-loading over the Internet. The remainder of this paper is used to describe some of the highlights of the new code. Dynamic memory is now used where appropriate in CVX in order to scale memory to the size of the problem and to avoid, for example, burdening continuum users with large spectral-line arrays. This was implemented through disk files containing device descriptions and other files containing the display catalog.