@itemize @bullet
@item
When a match is found, then the values of the variables present in the
-transaction file replace those variable's values in the new active
+transaction file replace those variables' values in the new active
file. If there are matching cases in more than more transaction file,
@pspp{} applies the replacements from the first transaction file, then
from the second transaction file, and so on. Similarly, if a single
transaction file has cases with duplicate @subcmd{BY} values, then those are
applied in order to the master file.
-When a variable in a transaction file has a missing value or a string
+When a variable in a transaction file has a missing value or when a string
variable's value is all blanks, that value is never used to update the
master file.
@end copying
@titlepage
-@title PSPP Users Guide
+@title PSPP Users' Guide
@subtitle GNU PSPP Statistical Analysis Software
@subtitle Release @value{VERSION}
@page