** or __ on either side of your text to add **bold* mark.* or _ on either side of your text to add *italic mark.` on either side of your text to add `inline code mark.~~ on either side of your text to add ~~strikethrough~ mark."hello" 'world' .* , - or + followed by space to create a bulleted list.1. or 1) followed by space to create a numbered list.[] ,or [x] followed by space to create a todo list.> followed by space to create a block quote.> followed by space again to create a nested blockquote.``` to create a code block.--- to create a horizontal rule.# followed by space to create an H1 heading.### followed by space to create an H3 sub-heading.#### followed by space to create an H4 sub-heading.##### followed by space to create an H5 sub-heading.###### followed by space to create an H6 sub-heading.