AIPS HELP file for DOWIDTH in 31DEC09
DOWIDTH
Type Adverb (Logical(3,4), > 0 => true)
Use: An logical array, dimension (3,4), associated with GWIDTH,
the initial guess of the (Major axis, Minor axis, Position
angle) of the component. Units are in (pixels, pixels,
deg). 1 -> Let parameter vary; -1 -> Keep parameter fixed
Null Value: true (all 1).