Documentation Improvement: getVectorFont() and Scalable Fonts

On CIQ 5.1.0 devices, using a Graphics.FontDefinition (e.g., Graphics.FONT_MEDIUM) with the :font option only works if the target device provides a scalable version of that font.

For example:

• On FR165, getVectorFont( :font => Graphics.FONT_MEDIUM, :scale => 1.0 ) returns a valid font object.

• On epix2pro47mm, the same call returns null, since on that device the standard font is not scalable.

This behavior is currently undocumented and can lead to confusion or unexpected null-pointer errors. It would be helpful if the documentation:

1. Clearly stated that getVectorFont() will return null when passed a FontDefinition that is not scalable on the target device.

2. Clarified which fonts are scalable on a per-device basis. Currently, this can only be vaguely inferred from the font column in the device reference.