Test-Source

Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text. Normal text.

There should be a box with colored source

#include <stdio.h>

int main()
{
  printf("Ahoj svete!\n");
}

And there should be normal pre-formatted source

#include <stdio.h>

int main()
{
  printf("Ahoj svete!\n");
}