slicestr
Creates a slice of a half-open range, including start and end indices.
Syntax
slicestr STRING START [END]
For example, 1 and 4 creates a slice including elements 1 through 3.
The end index can be omitted; it defaults to the string’s length.
{{slicestr "BatMan" 3}}→ “Man”{{slicestr "BatMan" 0 3}}→ “Bat”