The strings to be generated appear as they are written inside ' single quote marks. To escape a single quote ' to include it in a string write it twice '' (2 single quotes).

'This will appear as it is here' newline
'This will ''appear'' a little different' 

would appear like this in the generator output:

This will appear as it is here
This will 'appear' a little different

The whole string will be output with the formatting of its first character: any formatting changes later in the string will be ignored.

You can also apply translators to strings, e.g. to reformat special characters in them into an appropriate format for an XML or HTML output file: see “Translating strings” in Section 6.5.5.