In the dependent claims, write out the auxiliary technical features that can be removed or the technical features that can be further optimized.
Because the patent claim is a legal document, the protection scope of the patent right shall be subject to the patent claim.
Independent claims are too detailed, which will limit the scope of protection; If you write too broadly, you may lose your novelty and creativity, so you should grasp it well. Optional technical features are best written in the dependent claims.
For example, a product has a total of ***20 parts, and only 10 parts can realize functions.
If all 20 articles are written in the independent claim, then people only use 15 without infringement;
If only 10 essential parts are written in the independent claim, and the rest are written in multiple dependent claims, then as long as people contain 10 essential parts, how to use them is considered as infringement.
It is ok to indicate in the specification, but the protection of patent right has no substantive significance, because judging what is the "basic system" depends on the patent claim.