# I broke Stackoverflow: HTML comments not editable. (sorry)

Edit this post describes a situation where I was unable to view the HTML artifact allowing me to edit or delete a comment in Chrome.

First an apology, on breaking this question. I'm unable to edit my comment and the HTML link doesn't appear in the main site.

The comment I was trying to write was

w.r.t. "order of operations" in your final sample you have
9\times 3\equiv 27 \equiv 7\pmod{10}$why is it not written as 9\pmod{10}$$\times 3 \pmod{10}$$ \equiv 27\pmod{10}$$\equiv 7\pmod{10}$$ ... in other words, when looking at one half of a congruence, it's not immediately clear if \pmod{10}$$has been applied or not.  I broke the internetz by deleting one of the "$" signs where the parsing seemed to make my plain text "mathified".

I'm new at se.Math and I'm new to this markup. Sorry about the bug I created/discovered!

• Isn't this the same problem as here? If you can see cross which allows you do delete comment; then the solution is to delete it. If not you could perhaps try the workaround from that post, or flag for moderators attention and - hopefully - one of the moderators will delete the comment for you. – Martin Sleziak Oct 22 '13 at 15:58
• I've tried to fix it. Tell me if it looks correct. – user642796 Oct 22 '13 at 16:00
• Also, in the future you can "test" your comments by typing them up as answers and checking the preview (and then copy-and-pasting it as a comment). If you run into this problem again flag either the comment (if possible) or the post to which it is a comment for moderator attention. – user642796 Oct 22 '13 at 16:06
• @ArthurFischer Looks good, can you show me the code so I can learn from it? – halfbit Oct 22 '13 at 16:07
• Comments are not edible. – Asaf Karagila Oct 22 '13 at 16:09
• @makerofthings7: here's the code w.r.t. "order of operations" in your final sample you have $9\times 3\equiv 27 \equiv 7\pmod{10}$ why is it not written as $9\pmod{10} \times 3 \pmod{10} \equiv 27\pmod{10} \equiv 7\pmod{10}$ ... in other words, when looking at one half of a congruence it's not immediately clear if $\pmod{10}$ has been applied or not. – user642796 Oct 22 '13 at 16:11
• If you follow @ArthurFischer's suggestion to preview whatever you expect to be editing, as an answer, there is a "sandbox" thread for that purpose in meta. meta.math.stackexchange.com/questions/4666/… . If you do it under a question there are some side effects in the case of accidentally clicking Submit Answer, such as bumping the question and leaving a deleted answer visible to users with higher 'reputation' (awful word for it, sorry). – zyx Oct 22 '13 at 16:26
• @Asaf: You might eat your words. – Jonas Meyer Oct 22 '13 at 20:02
• @Jonas: No thank you, I already had dinner. – Asaf Karagila Oct 22 '13 at 20:04