Unrecognized escape sequence
An unexpected character follows a backslash (\) in a string. The compiler expects one of the valid escape characters. For more information, see Character Escapes.
The following sample generates XS1009.
// XS1009-a.prg
A common cause of this error is using the backslash character in a file name, as the following example shows.
To resolve this error, use "\\" or the @-quoted string literal, as the following example shows.
// XS1009-b.prg
