Command Reference : String and Date Function Reference
  
 
@insert
Syntax: @insert(str1, str2, n)
Argument 1: string, str1
Argument 2: string, str2
Argument 3: integer, n
Return: string
Inserts the string str2 into the base string str1 at the position given by the integer n.
Example:
@insert("I believe it can be done", "not ", 16)
returns “I believe it cannot be done”.
See also @replace, @instr and @mid.