Like most other languags, DM has text constants. In DM, we use double quotes " to denote them:

var/x = "Hello World!"

To place a quote inside a string, escape it with a backslash \ character. You'll also need to escape a backslash if you want to use one on purpose.

world << "The cow says, \"Hi.\"" // The cow says, "Hi."

Backslashes are also used for special macros and other symbols that are otherwise hard to include. A backslash at the end of a line will ignore the line break and continue the string on the next line after ignoring any leading spaces:

var/str = "Multi \
           Line \

We also have the ability to interpolate variables within strings as such:

var/num = 5
world << "Bob has [num] cows." // Bob has 5 cows.

Instead of escaping every line, there is another format for multi-line strings ({""}):

var/an = "an"
var/text = {"
This is how we have
text. Also, [an] embedded string.

DM also has a format for raw strings, which do not allow escape characters or embedded expressions. There are two main ways to specify a raw string, all of which begin with @.

Simple raw strings generally follow @ with a single-character delimiter, usually ". Line breaks are not allowed in simple raw strings.

world << @"I can say \ or [] without escaping anything!"

Complex raw strings use more complicated delimiters, but they let you include line breaks. The main way to do this starts with @{" and ends with "}, like the familiar multi-line format.

world << @{"
Now I have absolute freedom to use "quotes"
or [brackets] or line breaks.