diff --git a/README.md b/README.md
index ba73978..339a0df 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,12 @@ your `load-path`.
 ## Usage in Interactive Mode
 
 In interactive mode, calling `org-clock-csv` will open a buffer with the parsed
-entries from the files in `org-agenda-files`. The function can also be called
-from lisp code with a file list argument.
+entries from the files in `org-agenda-files`, while `org-clock-csv-to-file` will
+write this output to a file. Both functions take a prefix argument to read
+entries from the current buffer instead.
+
+Both functions can also be called from lisp code to specify an explicit file
+list argument.
 
 ## Usage in Batch Mode
 
diff --git a/org-clock-csv.el b/org-clock-csv.el
index a2cbb3f..80b32a5 100644
--- a/org-clock-csv.el
+++ b/org-clock-csv.el
@@ -5,7 +5,7 @@
 ;; Author: Aaron Jacobs <atheriel@gmail.com>
 ;; URL: https://github.com/atheriel/org-clock-csv
 ;; Keywords: calendar, data, org
-;; Version: 1.1
+;; Version: 1.2
 ;; Package-Requires: ((org "8.3") (s "1.0"))
 
 ;; This file is NOT part of GNU Emacs.
@@ -30,10 +30,13 @@
 ;; intended to facilitate clocked time analysis in external programs.
 
 ;; In interactive mode, calling `org-clock-csv' will open a buffer
-;; with the parsed entries from the files in `org-agenda-files'. The
-;; function can also be called from Lisp code with a file list
-;; argument, and there is an `org-clock-csv-batch-and-exit' that will
-;; output the CSV content to standard output (for use in batch mode).
+;; with the parsed entries from the files in `org-agenda-files', while
+;; `org-clock-csv-to-file' will write this output to a file. Both
+;; functions take a prefix argument to read entries from the current
+;; buffer instead.
+
+;; There is also an `org-clock-csv-batch-and-exit' that will output
+;; the CSV content to standard output (for use in batch mode).
 
 ;;; Code: