NSString

+(id)stringWithFormat:,...	creates a string following the format as defined in the first parameter. Further parameters are used to fill in the format. This method cannot be called from the MolTalk scripting language.
+(id)stringFromCharArray: (NSArray*)astr	addition to NSString to create a string from an array of character codes (instances of NSNumber9.2)
-(float)floatValue -(double)doubleValue	return converted real numbers
-(int)intValue -(long)longValue	return converted integer numbers
-(NSString*)stringByAppendingString: (NSString*)str	return a new string, which is the concatenation of the two
-(NSString*)substringToIndex: (int)idx	returns substring up to but not including index (start counting at 0)
-(NSString*)substringFromIndex: (int)idx	returns substring from the index to the end of the string