-\b The actual permissions being added or removed. These can be \c{r}
-(permission to read the file), \c{w} (permission to write to the
-file), and \c{x} (permission to execute the file, or in the case of
-a directory, permission to access files within the directory).
+\b The actual permissions being added or removed. These can be
+\I{read permission}\c{r} (permission to read the file),
+\I{write permission}\c{w} (permission to write to the file), and
+\I{execute permission}\c{x} (permission to execute the file, or in
+the case of a directory, permission to access files within the
+directory).