Data Types, string operations table

[jshagouv]

It would be helpful to have the descriptions in the Python, C# string operations table be more precise for the first two rows. Currently, a character's ordinal position within a string is a bit conflated with its index value; since they are not the same, it creates some minor confusion. For example, in the first row, str[3]/str.Substring(3,1) returns the 4th character in a string, or the one in the 4th position, which is at index 3.

Thanks!