## Changes Introduced in V9.0.2

The following describes the most significant changes which occurred in the AST library between versions V9.0.0 and V9.0.2:

1. The AST sharable libraries now use a non-zero version number.
2. The FitsChanFitsChan class has a new attribute called ForceTabForceTab, which is used in conjunction with the TabOKTabOK attribute to force the use of the “-TAB” algorithm when writing a FrameSetFrameSet out using the FITS-WCS encoding.