Basic usage of pods in Perl.

1. Pod syntax

Pod can be divided into three kinds, ordinary paragraph, literal paragraph (verbatim Paragraph) and command paragraph.
The distinction between the three is very simple, to =pod|head1|cut|over, such as the beginning of the paragraph as a command paragraph, with a space or tab (\ t), such as indentation to start the paragraph as a literal paragraph, the rest is the ordinary paragraph.

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1. =head1
2. =head2
3. =head3
4. =head4
5. This four indicator words produce the title of the specified level. Pod2html with its corresponding

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1. =pod
2. =cut
3. =pod only tells the compiler that the pod document is starting, and =cut is the end of the pod document.

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1. =over number Close
2. =item SYMBOL Generation Bullet
3. =back
4. The three of them are connected together. =over must be followed by a =back, and there is at least one =item between the two, and there can be no =head1. 4.

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1. Format code
3. The format code can be used for all paragraphs except the literal paragraph, including the command paragraph.
4. I<text>
5. Text in italics, effect as text
6. B<text>
7. Text in bold, effect as text
8. C<code>
9. Pod2html with <code> surround.
10. L<text|name/sec>
11. Hyperlinks.

2. Use of Pod2usage in the package.

If you want to display pods in the Perl module, use the following

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1. Use Pod::find QW (pod_where);
2. Pod2usage (-input = Pod_where ({-inc = 1}, __package__));
3. Where:-inc=>1 means Search @INC for the pod and also the Scriptdir __package__ represents the package file, if it is a::b A/b
4. Pod_where returns a reference to the file handle, and the default value in Pod2usage is $ $, the current file instead of the package itself

Basic usage of pods in Perl.