•"Reset Zoom" (its button looks like a magnifying glass with a "=" on it).
•The mask operation "Bluescreen" and the layer operation "Copy" have been improved.
Killed bugs:
•Crashed when viewing more than 1 picture, in different windows, in low-memory situations.
•A general low-memory bug.
•The picture operation "Crop To Alpha" produced incorrect result on multiple layer pictures.
•When painting, holding down the mouse button in one window and releasing it in another, produced funny results.
•When clicking on "Use Backup" or "Mask On/Off", and quitting to MacOS directly after, those changes were not saved correctly, unless the picture was also changed in some other way.
•Sometimes, when starting Rainbow, a "false" picture was added to the portfolio, causing random problems.
•"Shrink Window" could, in some cases, make the window too small for its contents.
•The MacOS mouse pointer appeared over Rainbow's pointer in some rare cases.
•If the background color of a picture was changed, the backup system ignored that, unless the picture was also changed in some other way.
Rainbow Painter v0.9.1 (April 17th 1999)
An extension conflict that caused Rainbow to crash in some cases, has now been fixed.