As you can see in the examples, negative values can be entered and will be converted to positive angles. The string cannot contain blanks except within a list or string. Read attempts to convert the string into the closest data type. If it cannot figure out what data type to convert to it will return nil. If more than one string is given it returns the sum of all the string lengths.
Returns ring Returns a substring of a string.
If length is unspecified it returns the remainder of the string. The unit mode values are set as follows. There are a few things you need to know to make your work with strings a little easier. There are special characters that are defined within AutoLISP, they are there for better formatting of your strings. They can be used in a string just like any other character but are a combination of two characters.