The difference between the embed syntax and the standard link syntax [text](url) is that the url in the embed has a special suffix, and it can only be one of the following:
.md#:embed, to embed Markdown..typ#:block, to embed the compiled SVG from Typst and display it as a block-level element centered..typ#:span, to embed the compiled SVG from Typst and display it as an inline element (less commonly used)..typ#:shared, to import the Typst file within the context of the current file, where text is used to provide the scope of the imported definitions, such as all definitions with *. This is used in conjunction with inline Typst syntax.
The reason for using these special suffixes in this syntax is that many Markdown editors can recognize them correctly, allowing for navigation between files.
Most of the time, the text in the embed syntax is left empty. However, since only Markdown embeds create child sections, the text can be used to set whether the section is expanded by default and its state in the table of contents. These settings are made up of a series of specific characters, and their functions are independent of each other, so the order in which they are written can be arbitrary.
+, indicates that the current section uses a counter.-, collapses the current section by default. Consequently, if this section also has a series of child sections, these child sections will not appear in the table of contents on the current page.., hides this section in the table of contents on the current page.