https://www.mathworks.com/help/matlab/ref/cdflib.getconstantvalue.html
cdflib.getConstantValue - Numeric value corresponding to Common Data Format (CDF) library constant...
This MATLAB function returns the numeric value of the CDF library constant specified in constantName.
common data format
https://www.nist.gov/publications/micro-common-data-format-specification
Micro Common Data Format Specification | NIST
Jan 23, 2023 - This specification describes a data format for space-constrained environments, such as the placement of machine readable data on paper.
common data formatmicrospecificationnist