Why is this called a sandbox?
Definition
In programming, a sandbox is an isolated testing environment where programs or files can run without affecting the main system. It is commonly used in software development and cybersecurity to test new code or potentially malicious software in a controlled setting to prevent harm to the system. The following image was colorized by Artificial Intelligence (A. I.). The original image, entitled “Children playing in sandbox. Tulare migrant camp. Visalia, California" by Arthur Rothstein in March of 1940, states “No known restrictions. For information, see U.S. Farm Security Administration/Office of War Information Black & White Photographs”

Note that above we have demonstrated fonts at different sizes, a hyperlink to another website and including a picture into a post. This line demonstrates using another font.
Additionally
In this case, you can freely “monkey about” without fear of messing up anything important. This gives you a chance to learn how to use this CMS (Content Management System). You can have emojis in your text
. But This can also be used to show off what this can do, even if it’s not something you'd want the public to have to suffer. The poem, “The Village Blacksmith” by Henry W. Longfellow could be linked online, such as this. Or I could hand it over to an A.I. music generator, and embed the song in a news post, like this:
Audio files are in the resources section. As are videos, like this:
Some of you might be surprised that the song that was generated was more than three minutes long. I had considered using it as a “get people excited” song, but it is full of hubris, so I decided not to use it. But if you’re curious, here it is:
Above, we see emoji inclusion, as well as embedding audio and video into a post. By using the Google icon in the editor bar, you can link to a file in your Google Drive, like this:
Dolch Sight Word List and CKLA Tricky Words.pdf
Greeting
Welcome to the sandbox!
A limitation of the post system is that while you can link a file (such as a PDF) into a post, you can’t directly link the PDF (or other file). That is, you can’t make the post directly take you to a file or webpage, unless you’re willing to learn some coding. It might just be easier for you to link the file/site and have your visitors click the link.
Using Meta Refresh To Send People Elsewhere
A meta refresh link can do the trick. You would click the post’s source icon and add a code snippet. If I wanted to have the post go to https://en.wikipedia.org/wiki/Main_Page, this is the code for that
<meta http-equiv="refresh" content="0; url=https://en.wikipedia.org/wiki/Main_Page">
If I wanted to have the post go to an online copy of the Space Mouse comic book (No. 1, April, 1953) from https://comicbookplus.com/?dlid=23796, this is the code for that
<meta http-equiv="refresh" content="0; url=https://comicbookplus.com/?dlid=23796">
And you can do the same thing if you know the URL to a PDF, such as that dolch word list, which is located on the web at https://drive.google.com/file/d/1AzyUcgLMA9ph4kGCuD1TGgT3UQAchfZ5/view?usp=drive_web
<meta http-equiv="refresh" content="0; url=https://drive.google.com/file/d/1AzyUcgLMA9ph4kGCuD1TGgT3UQAchfZ5/view?usp=drive_web">Honestly, it might just be easier for you to link the site/file and have your visitors click the link.
Additional settings for Safari Browser.
