This sandbox is intended for a collective collaboration to edit posts which would require a lot of effort and a lot of time, in particular, $\LaTeX$ifying images. It serves to localize to one thread the front-page "bumps" caused by edits, so that they may be easily ignored and mainly to facilitate that procedure. (Since if everyone attributed only a small amount of time, we would then together finish them without loosing too much time) Also, it helps to guard against losing longly-composed edits due to system crashes.
If you wish to take the time to format one of your own posts, please use this thread instead.
At the top of each post, type a link to the post you wanna edit followed with what should be edited in the post itself (directly copied from the code of the post), followed by a small space. $\text{($\star$)}$
Proper Use of the Sandbox
Look for a post which indicates that it is free and then edit it to your heart's content. If you want to edit a post that is not in the list of answers, create a new one with the requirements mentioned in $\text{($\star$)}$.