Surrounding text by two asterisks denotes bold style; using one asterisk denotes italic text, as does a single underscore.

"Climb if you will, but remember that courage and strength are nought without prudence, and that a momentary negligence may destroy the happiness of a lifetime. Do nothing in haste; look well to each step; and from the beginning think what may be the end." - Edward Whymper

n = 57
while n != 1:
    if n % 2:
    n = 3*n + 1
    n //= 2

Here are some Python keywords: for, while and lambda.

The following Punnett table is marked up in HTML.

A a
Female a Aa aa
a Aa aa

The inner planets and their satellites:

  • Mercury
  • Venus
  • Earth
    • The Moon
  • Mars
    • Phoebus
    • Deimos
  1. Symphony No. 1 in C major, Op. 21
  2. Symphony No. 2 in D major, Op. 36
  3. Symphony No. 3 in E-flat major ("Eroica"), Op. 55

Here is a link to the Jupyter website.

Some important mathematical sequences are the prime numbers, Fibonacci sequence and the Catalan numbers. ...

An inline equation appears within a sentence of text, as in the definition of the function $f(x) = \sin(x^2)$; displayed equations get their own line(s) between lines of text: $$\int_0^\infty e^{-x^2}dx = \frac{\sqrt{\pi}}{2}.$$

An interesting plot of the Newton fractal

A remote link to a star image