In a situation where an image is an important feature of the page, but also acts as a link to a page containing a high-res version, how should its alt tag be populated.   In this instance it needs to fulfil dual purposes:   A description of the image (as it is important in the context of the page) An indication of the link purpose / destination   How should both be fulfilled in the alt tag, and if they can't both be, which should take priority?  Note: I'm specifically interested in cases as outlined where both purposes apply. I'm not interested in situations where the image only functions as a link image to the main event.  Further Note: I am implementing a design over which I do not have final say. I am aware of basic accessibility guidelines, but as is so often the case no-one else on the project cares about making the site accessible, so I am left trying to do my best within given constraints.  So please don't answer or comment to tell me:   That the image should be a text link instead That the link should contain text as well as an image
An image alt="" text should contain information about that image in the context of the page, so for instance if you have an article about cats on skateboards and then a photograph of the cat on his skateboard you'd probably give it the alt text of alt="Fluffy pulling some mad tricks on his pimped-out board".          &ndash; Wireframes created with   However, what should happen when that image is a link to a page (such as the Wikipedia cat page)?  I don't think there is any point using the title attribute here because screenreaders just ignore that when an alt attribute exists - the only people who would see the title attribute are mouse users who hover over the image, so that excludes keyboard only users too. It's not really any benefit to accessibility to include a title in this situation (Overall the title attribute is a bit useless really).  So, what should the image ALT text say in this case?   states:     Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.    Therefore giving it the alt text of cat article page on Wikipedia is incorrect because that doesn't describe the image, neither does skateboarding cat image that links to the wikipedia article because the alt text should refer to the image itself, not the link associated with it.
MacTeX - TeX Live Utility broken after 2015 update I have the following strange message.  The repository at ftp://ftp.oleane.net/pub/CTAN/systems/texlive/tlnet  has TeX Live 2015, but you have TeX Live 18446744073709551615  installed. You need to switch repositories in order to continue.   How can I fix this ? Why is surface charge distribution uniform for a conducting sphere? Can't it be arbitrary? If the charge $q_1$ has to repel the charge $q_2$, the electric field has to go inside the conductor which contradicts the fact that electric field inside conductors is zero. Then why do the charges distribute themselves in a particular manner? Why can't they be distributed over a small place on the conductor? Setting items to status-completed before they're deployed In several scenarios, including two today ( and ), we have had bugs set to  simply because the fix has been checked in. Just because the code portion has been completed does not mean the work is done, and this can be confusing for users who come across the same problem. Until then it really is  or maybe a tag that doesn't yet exist (status-checked-in?).  Particularly in times like this week, where the stability of the system is a priority, I don't think this status should be set merely because the code has been checked in - it should happen when the code is actually deployed and verified. Currently the devs are being very good about telling us that the code is done but they're not sure when it will be deployed, but I think that is because of the stability issue. My regex is matching too much. How do I make it stop? If Voldemort's body dies, what process would he use to restore himself from a horcrux? His plans seem sloppy for the pains he had taken. For example, why create horcruxes from pieces of jewellery when they dont have the agency to seek out a new body by themselves?  He needed Quirrel, a person with unlikely ambitions to seek him out to gain an useful body. When that body was gone, he needed Barty Crouch, someone with questionable agency (he could be imprisoned) to transport Harry and draw his blood.  Nagini and the diary seems the only horcruxes with agency, the others are mostly inert.  What plans were ever taken to restore Voldemort from his horcruxes? What's the right terminology for Unity's UI elements? I've sent a few mails to the Ayatana mailing list regarding some UI suggestions for Unity, but I'm afraid I keep confusing the right terms for the UI element, so I would like to have some clarification.  Answer Index: Why do electrons around nucleus radiate light according to classical physics As I navigate through physics stackexchange, I noticed .  Electrons radiate light when revolving around nucleus? Why is it so obvious?  Note that I do not know anything about quantum mechanics - and I just want classical stories. Relay: higher voltage allowed at lower current? Is it safe to use a 30VDC/1A relay for a voltage of 60V but a current of &lt;100uA? E.g. this one: Can I use a custom Splash screen? The default Splash screens are cool, but I'd like to add some of my own work to remind me of how awesome I am (no, not really).    Is it possible to customize/change the splash screen? Why does TeX prefer an overfull box to hyphenating here? "The Struts dispatcher cannot be found" error while deploying application on WebLogic 12.1.3 How can I run Debian stable but install some packages from testing? Say you're running a server and you don't want to upgrade to Testing (Squeeze) from Stable (Lenny) to just install a required package or two.  What's the best way of installing only certain packages from Testing? If I were to use the sentence "There are lots of John Smiths" in the world, would that be the correct use for saying that there are a lot of people named John Smith in the world?  I don't think there should be an apostrophe as that would imply ownership of something.  If my first example is correct, then what would you do if the name referenced already ended with an 's'? How can I recover deleted photos from an SD Card? My technophobe mother returned from a European trip to discover she'd erased all but 15 images from a nearly full 2GB card. As I am the computer guy in the family, she posted the card to me and asked that I make something magical happen.  The photos were taken with and deleted by a Nikon Coolpix. (I don't know the model.)  I am a Linux guy, but there is a Windows Vista box at my disposal.  What is my best strategy to try to recover something? how many linearly independed vectors combinations may I extract from a set of vectors Consider the set of $n$ vectors $\mathcal{S}=\{v_1,v_2,\dots,v_n\}$, with $v_i \in \mathbb{R}^n$. Let that set generate a subspace $\mathbb{V}$ of $\mathbb{R}^n$ of dimension $r\le n$. How many different unordered basis of  $\mathbb{V}$ may be constructed by picking up $r$ vectors from $\mathcal{S}$. There is a method to find them? Selecting features within Polygon from another layer using QGIS? I'm using QGIS 1.8 with a PostGIS database and I have three PostGIS-layers in QGIS a lines layer, a points layer and a polygon layer.  What I'm trying to do is to select a polygon in the polygon layer and mark all points within this polygon.   For me the only way to do this is to use the button "Select by Polygon" but in this way, I cannot use an existing polygon for selection. how to tell Latex to ignore empty lines How can you handle an IN sub-query with LINQ to SQL? UK Visa has been refused for false document I applied for a marriage visitor visa, to get married to my boyfriend of 2 years.   We met while we were students in the UK and have had vacations together in the two years but not in the U.K.   With the application I had attached an offer letter from a company stating that I have a job offer open starting 3 months later.   This however has been tagged as non genuine, although the company is registered and is run by someone I know.  How can I appeal to this? Consider this reverse biased diode :     I read that no or very small current flows in reverse biased diode as depletion layers get widened and huge resistance is offered so no electrons can cross it. But, why the electrons or holes need to cross the depletion layer? In the diagram above, the positive charges (holes) are moving towards left and the current due to electrons is also in left, so won't the circuit be completed?