Pitted rust on frame
Dealing with rust on a steel frame
How does deleting work? What can cause a post to be deleted, and what does that actually mean? What are the criteria for deletion? Why is the Sun approximated as a black body at ~ 5800 K? How do I install wine? Copying unicode symbols from Firefox address bar as is Let's say I open a webpage with some Unicode characters, say, Cyrillic, in the address like this:        When I try to copy it from the address bar somewhere else, it becomes unreadable rubbish:        I guess this is for compatibility. However for readability I want to copy it straight away with proper Unicode characters.  What and how should I tweak to make that possible?  Edit: The answers are good, but they are hacky. Are there any settings in about:config? Add space before and after tabular environment The tabular environment does not add any vertical space before or after it. This looks odd, in my view. What is the "correct" or "best" way to add some space? Also, why is there more space after the tabular environment than before it, as seen in the example below?  \documentclass{article} \begin{document} \noindent Here is a line with some text in it.  \begin{tabular}{*4{l}}     Worg &amp; Worg &amp; Worg &amp; Worg\\     Worg &amp; Worg &amp; Worg &amp; Worg\\ \end{tabular}  \noindent Here is another line with some text in it. \end{document} Stack Exchange doesn't allow me to answer protected questions because I gave away earned rep in bounties Is there a technical reason to use > (<) instead of != when incrementing by 1 in a 'for' loop? What kind of matter are black holes made of? Imagine a black hole originally formed from, for example, Rubidium atoms. On the other hand, one made from, for example, Helium atoms. Will it be there any difference between the two? Or perhaps once formed it all turns into the same type of matter?  Can the "composition" of the matter-energy in the black hole be inferred somehow?  Could one say that "black hole substance" is a distinct form or state of matter different from other forms or states of matter? Using modulo operation to draw graph Find a formula for a sequence $\{\sqrt{3},\sqrt{3\sqrt{3}},\sqrt{3\sqrt{3\sqrt{3}}},...\}$ Adding Favorites to the Stack Exchange global inbox We're considering adding favorite notifications to the global inbox, and are looking for feedback on the idea (as we're not completely sold on it).  But first, some history.  Favorites are kind of like bookmarks, in that they're kept in a handy centralized place.  They also follow you across browsers.  Ok, ok... "bookmarks, on the internet" is not the most compelling feature, but Favorites also opted you into notices for those questions as if you were the owner (edits and new answers, at least).  This was probably the most confusing part (though a  feature) of the old envelope behavior judging by erroneous bug reports, so a way to opt out of this .  Now, favorite updates go nowhere.  But we could* put them into the inbox.  Here's how we envision this feature working:   Every current user has their "notify me on favorite changes" preference cleared (new users start with it cleared). The first time someone favorites a question, they're prompted to opt-in to favorite notices. Whenever a question is commented on or answered (or, possibly, edited) a new notice is pushed into the inbox of users who have favorited it, and have opted in.   Opt-in would be per-site, and it would remain possible to opt-out from your profile page.   This is not a final design, but the basic idea is correct  As I mentioned above, we're not 100% sold on this idea.  We've had a policy to date that nothing goes into the inbox that isn't specifically targeted at a user; this would be tweaking that policy.  *We could also put changes into their tab on the user page, but that reduces their visibility. How to identify predatory publishers/journals To show that ${x_n}$ is convergent where $|x_{n+1} - x_n|< \frac{1}{n^2}$ Let ${x_n}$ be a sequence in $R$ such that $|x_{n+1} - x_n|&lt; \frac{1}{n^2}$ for all $n \in N$.  Show that the sequence is convergent.  If it were $|x_{n+1} - x_n|= \frac{1}{n^2}$, could take help of the fact $\sum \frac{1}{n^2}$ is convergent and of triangular inequality.  But what to do here? Please help. Thanks in advance. I have asked more than 100 questions on SO. The problem with asking so many questions is that it's sometimes very hard to navigate to the question I want.  Is there any way to improve the interface further? I'm looking for a way of saying “having amorous affairs”. Ideally it should indicate a married man fooling around with younger women, and the expression should be informal, humorous, in low register but yet not rude. Where did my default brushes go? I was working on a logo design for a client in Illustrator CS4 when suddenly the default brushes were no longer there. The brush files are still in place but they do not show up in the brushes panel. The options to show the brushes by type are checked but greyed out.   I tried a preference reset, that didn't fix it. I haven't tried any new brushes because the brush I needed was in the stock set. I know its bad form not to try everything but I needed one of the stock brushes to tweak an existing design. How to roll the viewport? How do I rotate the viewport around the local (to the view port) - Z axis?  Basically what you would  get if you were to hit R with the camera selected in camera view. For the ring $\Bbb{Z}[\sqrt{d}]=\{a+b\sqrt{d}\mid a,b \in \Bbb{Z}\}$ where $d$ is not divisible by the square of a prime, prove that the norm $N(a+b\sqrt{d})= |a^2-db^2|$ satisfies the assertions: $N(x)=0$ if and only if $x=0$; $N(xy)=N(x)N(y)$ for all $x$ and $y$; $x$ is a unit if and only if $N(x)=1$; and if $N(x)$ is prime, then $x$ is irreducible in $\Bbb{Z}[\sqrt{d}]$. A relative managed to change her password, yet can not input the correct password.  She does not want to reset the phone to avoid loss of data (pictures, contacts, messages, etc.).  Will the phone eventually stop accepting logon attempts? I duplicated a few objects with Alt+D and now I want to apply some modifiers to them, however I can't, because they are multi-user objects.  I tried U > Objects but I still can't apply the modifier.  How to make multi user objects single user?