Clarify comments

1 files changed, 6 insertions, 4 deletions

diff --git a/pexpect/spawnbase.py b/pexpect/spawnbase.py
index 4664884..5dd24b5 100644
--- a/pexpect/spawnbase.py
+++ b/pexpect/spawnbase.py
@@ -62,7 +62,7 @@ class SpawnBase(object):
         # Data before searchwindowsize point is preserved, but not searched.
         self.searchwindowsize = searchwindowsize
         # Delay used before sending data to child. Time in seconds.
-        # Most Linux machines don't like this to be below 0.03 (30 ms).
+        # Set this to None to skip the time.sleep() call completely.
         self.delaybeforesend = 0.05
         # Used by close() to give kernel time to update process status.
         # Time in seconds.
@@ -70,9 +70,11 @@ class SpawnBase(object):
         # Used by terminate() to give kernel time to update process status.
         # Time in seconds.
         self.delayafterterminate = 0.1
-        # After each call to read_nonblocking(), pexpect releases the GIL
-        # through a time.sleep(0.0001) call by default since version 2.1.
-        # When set as value 'None', the old 2.0 behavior is restored.
+        # Delay in seconds to sleep after each call to read_nonblocking().
+        # Set this to None to skip the time.sleep() call completely: that
+        # would restore the behavior from pexpect-2.0 (for performance
+        # reasons or because you don't want to release Python's global
+        # interpreter lock).
         self.delayafterread = 0.0001
         self.softspace = False
         self.name = '<' + repr(self) + '>'