Nothing
$$S(t)=Pr(T > t), t\in (0,\infty)$$
$$S(t) \ge 0, \forall t \in \mathbb{R}^{+}$$
$$\begin{aligned}S(0)&=1\\\\ \displaystyle\lim_{t \to \infty} S(t)&=0\end{aligned}$$
Alternate names
The reliability function
The complementary cumulative distribution function
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.