KASH3 Ref - Position

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| ### Function Position ( string S, char c ) -> elt-ord^rat ### Optional Arguments
Start | elt-ord^rat | (Default: 1) | Determines the position where the search is started.
Fail | any |  | Determines what to return in case of failure.
### Description Return the position of the first occurence of `c' in `S' if c is a character in the string `S', and FAILURE otherwise. ### Examples S:="foobar"; Position(S,'o'); Position(S,'f',rec(Start:=2)); Position(S,"foo");
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