TI-83 Plus CATALOG, Strings, Hyperbolic Functions 492
inString(
inString( returns the character position in string of the first character of
substring. string can be a string or a string variable. start is an optional
character position at which to start the search; the default is 1.
inString(string,substring[,start])
Note: If string does not contain substring, or start is greater than the length of
string, inString( returns 0.
length(
length( returns the number of characters in string. string can be a string or
string variable.
Note: An instruction or function name, such as sin( or cos(, counts as one
character.
length(string)