https://gemlog.blue/text-gemini-format.php
Special formatting in text/gemini documents
The web uses html to create rich documents that link to each other, list items, and divide content up into reasonable blocks.
The gemini protocol has a much simpler to learn format for creating rich documents with various capabilities. That format is text/gemini. You will find example for each of the different line types that text/gemini supports. You can use them in your documents here on gemlog.blue to link to any content you like (and have a valid url for).
Example Document
Headings are supported at three different levels denoted by starting a line of text with 1-3 '#' characters followed by a space and some text:
Some clients/browsers will create tables of contents for documents based on these headings, others will show them in different font sizes, while other will just display the text as is. When displayed as is a viewer can still see that they are hedings and what their neting level is by the number of '#' characters they see preceding the text.
Links are created by starting a line with `=> ` followed by the url, a space, and the text you would like the user to see:
Start creating your own gemlog!
You may have noticed that gemini supports links to other protocols (the above example includes a web link, beginning with `https`, and a gemini link, beginning with `gemini`). This crosslinking support is one of the great strengths of the gemini protocol.
Lines that start with > are treated as "block quotes".
Preformatted text lines are the most complicated type of line in text/gemini. They function as a sort of toggle. You toggle on preformatted mode with three back tick characters (``` at the beginning of the line) and toggle off with three more. The starting line of ``` can also include "alt" text after the back ticks. This will usually not be shown to the user, but is useful for search engines, screen readers, or users using clients that allow it to be shown.
Using pre-formatted text mode you can display ascii art, poetry with irregular spacing, code, etc. without the client reworking the spaces in your lines.
0 0 L \__/
Hopefully that all makes sense and gives you a good starting point. For more information you can view the official text/gemini specification.