=for toc :caption('Table of contents')

  head1, head2, head3 

=head1 Title

=head2 Subtitle

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Space stations feature I<hydroponic> gardens N<Plants grow without soil,

using mineral nutrient solutions.>, a necessity for B<long-term> missions.

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This is an inline formulas example: F< y = \sqrt{3x-1}+(1+x)^2 >

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=for formula :caption('The Cauchy-Schwarz Inequality')

   \left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)

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See this L<link|https://en.wikipedia.org/wiki/Cauchy%E2%80%93Schwarz_inequality>

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=head2 Diagrams

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=begin Mermaid :caption('Diagram with caption')

graph LR

        A-->B

        B-->C

        C-->A

        D-->C

=end Mermaid

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=begin comment

This is a commented text. 

=end comment

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=head2 Lists 

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Options B<are>:

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=item1  Animal

=item2     Vertebrate

=item2     Invertebrate

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=item1  Phase

=item2     Solid

=item2     Liquid

=item2     Gas

=item2     I<Chocolate>

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=head2 Tables

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=table

    Constants           1

    Variables           10

    Subroutines         33

    Everything else     57

​

=for table

    mouse    | mice

    horse    | horses

    elephant | elephants

​

=table

    Animal | Legs |    Eats

    =======================

    Zebra  +   4  + Cookies

    Human  +   2  +   Pizza

    Shark  +   0  +    Fish

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=table

    X | O |

   ---+---+---

      | X | O

   ---+---+---

      |   | X

​

=table

    X   O

   ===========

        X   O

   ===========

            X

​

=begin table :caption('Super table!')

                        Secret

        Superhero       Identity          Superpower

        =============   ===============   ===================

        The Shoveller   Eddie Stevens     King Arthur's

                                          singing shovel

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        Blue Raja       Geoffrey Smith    Master of cutlery

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        Mr Furious      Roy Orson         Ticking time bomb

                                          of fury

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        The Bowler      Carol Pinnsler    Haunted bowling ball

​

=end table

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=begin markdown

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## Header inside markdown

$$

\operatorname{ker} f=\{g\in G:f(g)=e_{H}\}{\mbox{.}}

$$

​

​

 * list 1

   * level 2

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=end markdown

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  =alias PROGNAME    Earl Irradiatem Evermore

  =alias VENDOR      4D Kingdoms

  =alias TERMS_URLS  =item L<http://www.4dk.com/eie>

  =                  =item L<http://www.4dk.co.uk/eie.io/>

  =                  =item L<http://www.fordecay.ch/canttouchthis>

  The use of A<PROGNAME> is U<subject> to the terms and conditions

  laid out by A<VENDOR>, as specified at:

       A<TERMS_URLS>

​

=for code :allow(B)

This I<is> a B<text>

​

​