Sandbox

This is a page for testing out editing --- Jeffrey.

Now I'm trying out editing as an anonymous user. --- who knows?

Soldering

Testing captcha.

Testing captcha on new.

A third heading

A subheading

A sub-subheading

I'm adding several heading to get a table of contents to show up.

Math

[math]\displaystyle{ \int_0^\infty x dx }[/math]

Code

#include <stdio.h>

int main(void) {
    printf("hello, world!\n");
    return 0;
}