string(float fhandle) fgets = #112;
void(float fhandle, string s) fputs = #113;
float(string s) strlen = #114;
-string(...) strcat = #115;
+string(string s, string...) strcat = #115;
string(string s, float start, float length) substring = #116;
vector(string) stov = #117;
string(string s) strzone = #118;