Every gist is a Git repository,which means that it can be forkd=ed and cloned.If you are signed in to
GitHub when you create a gist, the gist will be associated with your account and you will see it in your
list of gists when you navigate to your gist home page.
Gists can be public or secret.Public gists show up in Discover,where people can browse new gists as
they're created. They're also searchable.Secret gists aren't private. If you send
the URL of a secret gist to a friend, they'll be aable to see it. However,if someone you don't know 
discovers the URL, they'll also be able to see your gist.If you need to kepp your code awar from
prying eyes ,you may want to create a private repository instead.
After creating a gist, you cannot convert it from public to secret.
You'll receive a notification when:
You are the author of a gist.
Someone mentions you in a gist.
You subscibe to a gist,by clicking Subscibe at the top of any gist.
You can pin gists to your profile so other people can see them easilr.For more information,see
"Pinning items to your profile."
You can discover public gists others have created by going to the gist home page and clicking ALL 
Gists. This will take you to a page of all gisrs sorted and displayed by time of creation or update.You
can also search gists by language with Gist Search. Gist search uses the same search syntax as code
search.
Since gists are Git repositories,you can view their full commit history, complete with diffs. You can
also fork or clone gists. For more information,see"Forking and cloneing gists".
Youcan download a ZIP file of a gist by clicking the Download ZIP button at the top of the gist. You
can embed a gist in any text field that supports Javascript,such as a blog post.To get the embed
code, click the clipboard icon next to the Embed URL of a gist. To embed a specific gist file, append
the Embed URL with ?file=FILENAME.
Gist supports mapping GeoJSON files. These maps are displayed in embedded gists,so you can easily
share and embed maps. For more information,see"Working with non-code files."
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