Linkmaster is a large add-on based on Anki. It contains various solutions for building card links, and also provides a learning framework for conceptual or applied knowledge that is different from Anki's original one.
Linkmaster requires a certain learning cost to use its full scope, so if you just want to make simple links to cards, without a deeper idea of how they relate to each other, you may not find it useful.
But if you are also obsessed with using anki to review complex, order-sensitive knowledge, such as math, physics, literature reading, then Linkmaster is definitely for you.
If you do this, you will get a string that you can paste into the context of the card to form a link button for the card to jump to, hence the name in-text link.
For example, if you are writing the content of card A and you find that it is related to card B, then you can copy B as an in-text link and paste it into the context, so that the link is integrated into the context and is suitable for the way it is mentioned in the text.
Bind cards to cards regardless of context, hence the name out-text links.
out-text links are global. That's why they are also called global links.
For example, if you have three cards, A, B and C, you can link them through the default algorithm or the graphical interface.
Their linking relationships are globally valid and unique, i.e. the out-text linking relationship is globally exclusive, and only one linking relationship can exist for A, B and C.