/// - optionally print some diagnostics.
///
/// With the '-w' command line option user may specify the external application
-/// or script to be executed. The is executed twice, first when the test starts
+/// or script to be executed. This is executed twice, first when the test starts
/// and second time when the test ends. This external script or application must
/// accept 'start' and 'stop' arguments. The first time it is called, it is
/// called with the argument 'start' and the second time with the argument
/// 'stop'.
///
-/// The applicated is executed by calling fork() to fork the current perfdhcp
+/// The application is executed by calling fork() to fork the current perfdhcp
/// process and then call execlp() to replace the current process image with
/// the new one.
///