[Libreoffice-bugs] [Bug 107193] How to increase text size of local help files

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=107193

--- Comment #7 from Gérard Talbot <varia at gtalbot.org> ---
Adolfo,

The text size of the help content was indeed too small for me. I think
increasing body size to 11pt is most likely still small for a majority of
people over 50.

Several studies now indicate that the minimum font size for text on the web and
on CRT is 16px (12pt).

Some studies:

Big Type Is Best for Aging Baby Boomers
A Case for Universal Graphic Design
http://web.archive.org/web/20070711190923/http://www.lighthouse.org/accessibility/boomers/


"
3. Point Size
Type should be large, preferably at least 16 to 18 points, but keep in mind
that the relationship between readability and point size differs somewhat among
typefaces.
"
coming from

Making Text Legible
Designing for People with Partial Sight
http://web.archive.org/web/20070708133853/http://www.lighthouse.org/accessibility/legible/

"
Flash forward to 2007 and believe it or not, 16px was still considered huge for
body text, but by 2011 the mainstream influx of responsive development and
larger resolution displays caused designers to consider 16px as a minimum, and
we’ve been toiling close to that mark ever since.
"
coming from
Your Body Text Is Too Small
Why website body text should be bigger, and ways to optimize it.
https://blog.attackthefront.io/your-body-text-is-too-small-5e02d36dc902

A more recent study:

Make it Big! The Effect of Font Size and Line Spacing on Online Readability. 
https://www.slideshare.net/mpielot/make-it-big-the-effect-of-font-size-and-line-spacing-on-online-readability-62004998
concludes by suggesting 18pt

Also

16 Pixels Font Size: For Body Copy. Anything Less Is A Costly Mistake
https://www.smashingmagazine.com/2011/10/16-pixels-body-copy-anything-less-costly-mistake/

- - - - - -

Whatever the initial body size of help content is or becomes, this bug report
is about providing icons and text description somewhere in the interface
explaining how to increase and decrease text of content of local helpfiles
(with Ctrl++, Ctrl+- or with Ctrl+mousewheel rolling).

"
With so many different sized monitors around and different resolution settings
available, there’s just no way you can guarantee that a visitor will have the
same set up as you (or your web designer). Making the font size adjustable
based on the visitor’s settings is one way to keep the visitor.
"
Best Font Size for Web Design 
Don’t Set the Font Size Too Small!
http://www.webpagemistakes.ca/best-font-size-for-web-design/


The best line length is widely known to be between 50 and 75 characters
(including white space). But since the help content pane is flexible-resizable,
this is not settable. On the other hand, leading (line spacing) is: best value
is 1.5, not 1.0. And we have lots of documentation on readability and line
spacing.

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