About EQUALS SIGN WITH TWO DOTS ABOVE AND TWO DOTS BELOW
Equals Sign With Two Dots Above And Two Dots Below (U+2A77) is a Unicode math symbol from the Supplemental Mathematical Operators block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class ON (other neutrals), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ⩷ or ⩷.