White space characters in strings

White space is a series of one or more characters that show as blank space, Each GLS locale defines what characters are white space characters.

For example, both the TAB (ASCII 9) and blank space (ASCII 32) might be defined as white space characters in one locale, but certain combinations of the CTRL key and another character might be defined as white space characters in a different locale.

The convention for representing a single-byte white space in this publication is the letter s. The following notation represents one single-byte white space:
s
In the ASCII code set, an example of a single-byte white space is the blank character (ASCII 32). To represent a string that consists of two ASCII blank characters, the publication uses the following notation:
ss
The following notation represents a multibyte white space character:
s1...sn
Here s1 represents the first byte of the white space character, and sn represents the last byte of the white space character, where n can range 2 - 4. The following notation represents one 4-byte white space character:
s1s2s3s4