I have published a post on how you can display HTML tags in posts and comments using special codes at Display HTML tags in posts and comments.
As a result of a tip from a blog reader, I am testing to see if the HTML tags can be made to display by typing the actual HTML without using special codes in posts using the COMPOSE mode. If you see the HTML tag for a hyperlink rather than the actual hyperlink, it means this test is successful"
Blogger Tips and tricks
Conclusion: test failed as you can see the hyperlink HTML tag became an actual link. You can test that by clicking on the above link and see what happens. That isn't suppose to happen. If the test had been successful, what you should see above is
<a href="URL">anchor text</a>
where the actual URL of the target site has been replaced by just URL and the "Blogger Tricks and Tips" had been replaced by anchor text (which is the actual name given to such text) as I am afraid the HTML tag may become too long and extend into the sidebar, causing problems.