Finds the first occurrence of any one of a set of characters
        in a string, from a specified start position. The search is
        case-sensitive.
			
		
		
		
		Function FINDONEOF
Example
findoneof(string set,string string,[number start]):number
Arguments
				The arguments for this function are set. You can not use other arguments except the following ones.
				
			
		
		
			| Name | Type | Required | Description | 
|---|---|---|---|
| set | string | Yes | String that contains one or more characters to search for. | 
| string | string | Yes | String in which to search. | 
| start | number | No | Start position of search. |