idlwave-help-frame-parameters

idlwave-help-frame-parameters is a variable defined in `idlw-help.el'.
Its value is

((height . 32) (unsplittable . t))

Documentation:
The frame parameters for the special Online Help frame.
See also `idlwave-help-use-dedicated-frame'.
If you do not set the frame width here, the value specified in
`idlw-help.el' will be used.

You can customize this variable.