Locates the sub string in argument 2 in the input string. If found the function will return the character offset of the sub string. If not found the function will return -1.
| Number | Type | Compulsory | Default | Description |
| 1 | string | Yes | Input string | |
| 2 | string | Yes | Sub string | |
| 3 | real | No | 0 | Offset |
String to search
Sub-string
Offset into search string where search should begin.
Return type: real
Number of characters from start of search string where sub string starts. -1 if substring is not found.
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