In Taoism, it is generally called the sword finger.
Of course, there is a more professional name called instruction seal.
That is to say, you have such a will or idea or something to do now.
Instruct the invisible ghost to help you finish it.
Of course, this can only be done by qualified personnel.
Like a lotus flower, the middle finger and thumb are connected together, and the two outer fingers are stretched out.
This is a statement seal.
As for the others, there are many, many imprints.
For example, India wants India, India equals Afghanistan, India is defined by law, and so on. These are very common.
However, it is particularly important to note that it is best not to print without actual evidence.