How to draw a picture frame on A4 paper to be considered standard? Actual size × 95%. Does the actual size refer to 210*297?

The actual size is 210*297, and the picture frame has a standard format. I checked it for you and found that it is divided into two types. One type requires binding. It is usually mounted vertically in A4 format, leaving 25mm on the left and 5mm on the other sides. The other type does not require binding and does not need to leave a binding margin. , leave 5mm on all four sides. Sometimes, for the convenience of copying or microphotography, a "centering mark" is also used, which is a thick solid line about 5mm drawn from the periphery into the frame.