Function: `Insert`

Inserts a substring into another string at a specified position.

Method Signature

Insert(substring=[string], string=[string], position=[integer])

Argument	Type	Required	Description
`substring`	`string`	`true`	The string to insert.
`string`	`string`	`true`
`position`	`integer`	`true`	The position at which to insert the string.