| SAXONICA | 
fn:substring(string? $sourceString, double $startingLoc) → string?
Function signature
| $sourceString | xs:string ? | 
| $startingLoc | xs:double | 
| Result | xs:string ? | 
Returns a substring of a given string starting at the given starting position and continuing to the end of the string
fn:substring(string? $sourceString, double $startingLoc, double $length) → string?
Function signature
| $sourceString | xs:string ? | 
| $startingLoc | xs:double | 
| $length | xs:double | 
| Result | xs:string ? | 
Returns a subtring of a given string, starting at a given position and continuing up to a given length