int StrFind(str s, str what)
Returns the position of the first occurence of what in s. If the string is not present, returns -1.
StrFind("abcdefabc", "def") -> 3
StrFind("abcdefabc", "abc") -> 0 // First occurence
StrFind("abcdef", "xyz") -> -1 // Not found
StrFind("abcABCabc", "ABC") -> 3 // Case-insensitive
StrFind("ab", "abc") -> -1 // Not found
StrFind("", "abc") -> -1 // Not found
int index = StrFind(s, "keyword");
if (index != -1)
print(s:"Found the keyword at position ", d:index);
else
print(s:"Keyword not found");