Position = InStr ( String AS String , Substring AS String [ , Start AS Integer , Comparison AS Integer ] )
Returns the position of the first occurrence of Substring in String.
If Start is specified, the search begins at the position Start.
Comparison can be one of the following value:
PRINT Instr("Gambas is basic", "bas")
4
PRINT Instr("Gambas is basic", "bas", 5)
11
PRINT Instr("Gambas is basic", "not")
0