two accessibility questions and two general:

users
#1

hi every one.
thanks extremely for spending your time helping me and other users.
i request devine mercy for you in my prayers always!
i have questions and i wish to find answers for them by your kindness
and generocity as always.
1/ how can i know which accessibility issues were solved in
libreoffice 4.4 branche?
i searched, but could not find answer.
2/ from two days ago by reading bugzilla i realized that libreoffice
calc became accessible since version 4.3.3 if i am correct and it made
me very happy.
is it possible to for example: impress is accessible now since
specific version, but i dont have information about it now?
3/ whats the difference between number format and scientific and
engineering which added since version 4.4 branche to libreoffice calc?
whats its usage and advantage?
4/ is it possible to add images and edit them in libreoffice versions
before version 5?
because since version 5.0 the item images (crop image, replace image,
compress image, save image and edit with external tools) were added
and not in the previous versions.
does it work like photoshop, gimp etc?
i mean that is the same with images programs like photoshop gimp and
also the fonction and usage the same between the new images in
libreoffice programs which i mentioned with these specific image
programs?

-- O people! there has come to you indeed an admonition from your Lord
and a healing for what is in the breasts and a guidance and a mercy
for the believers.
Say: In the grace of Allah and in His mercy-- in that they should
rejoice; it is better than that which they gather.
holy quran, chapter 10 verses 57 and 58.

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#2

1/ how can i know which accessibility issues were solved in libreoffice 4.4 branches i searched, but could not find answer.

Basically, the changes made LibO easier to use with _some_ screen readers.

2/ from two days ago by reading bugzilla i realized that libreoffice calc became accessible since version 4.3.3 if I am correct and it made me very happy.

The crucial issue here is what specific accessibility functionality you
are looking for.

For some a11y tool chains, LibO Calc has been completely accessible
since the days of the 0.x release. For other a11y tool chains, LibO is
completely inaccessible.

3/ whats the difference between number format and scientific and engineering which added since version 4.4 branche to libreoffice calc?

Engineering format works in multiples of three.
Scientific format works in any numbers.

4/ is it possible to add images and edit them in libreoffice versions before version 5?

Yes, but a lot depends upon the type of image editing you want to do.

does it work like photoshop, gimp etc?

Not really.

jonathon