http://www.macworld.com/article/2026699/stop-squinting-make-text-bigger-in-os-x. html
Since I am almost completely new at computers, this article's indicating with pictures where things might be found for decision
making around font size and was accurate in relation to the MacBook Air 10.10.3 that I am using. Don't know the source of, in this
initial venture into the MacAir, I came across these things which worked well to improve visability
(and I mention in my previous response), but at the very least the linked article encouraged me to go ahead and follow the recipe
presented for maximizing visibility, and then with that energy of everything improving positively with the link's suggestion
did the following too, and I can see the font generally bigger everywhere from these actions on the Yosemite as compared
to the Maverick in 2014,
Without the link's info which applied (as far as I know to the 10.10.3 perfectly well) and these other adjustments a new person
to computers might not be aware of I saw improvement in the 10.10.3's default presentations and the adjustments I could
make to these, in advisories and info panels about the computer (which in the previous MacBook 10.9.4 cause severe eyestrain
to someone just learning and reading a lot of them) with the zoom function which as far I had experienced didn't work on
the Maverick. So that is specifically an improvement on Yosemite for my level of visual abilities, but might be for someone
with bigger challenges.
As I shared earlier:
And in Apple Mail, put into Help search box: "customizing toolbar" and a pointer indicates where this feature i
s found onthe app ... then clicking put the A A (symbol) and the words under it to the 'customized' Mail toolbar.
This is a really helpful option with Yosemite ( with Maverick I needed to open each mail as if forwarding it in
order to increase the size of the font to readable ! -so you can imagine my relief) now in this Yosemite's Mail
the AA feature in the customized toolbar let's me view each mail without opening it. (Maybe I'm making too
much of what might be ordinary discoveries and maybe they were available on the Maverick and in my ignorance I
didn't know it. Anyway, for any other novices this is what I am sharing (I hope it helps you too): to increase the size of the message reception area when reading emails.
This is a lovely new feature of the Yosemite 10.10.3 Find that including names as well as icons (a choice in customizing
the toolbar) is also helpful to vision ease. Making the icons in the dock larger, "magnification" of them (in System
Preferences: "Dock") is also an aid. The A A (in the toolbar of Safari) is also available with Yosemite. Have found
that the option+command (together held down) and then the plus or minus (+ or -) key pressed actually increases
the information boxes that come up and are needed for making specific choices, for example in the System Preference
dock choice described here, or when one clicks the ? (question mark) in the corner of such choice pages/inserts to receive on
scene the online manual describing the choices given in more detail. The link given here is so helpful wanted
to share it with anyone challenged visually with using a MacBook Air too.