diff --git a/xorriso/xorriso.1 b/xorriso/xorriso.1
index d9aee92f..ab052e5b 100644
--- a/xorriso/xorriso.1
+++ b/xorriso/xorriso.1
@@ -9,7 +9,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Version 1.4.7, Dec 13, 2016"
+.TH XORRISO 1 "Version 1.4.7, Feb 22, 2017"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -1538,7 +1538,10 @@ and re\-enables \-disk_pattern expansion.
 Allow or disallow overwriting of existing files in the
 ISO image by files with the same name.
 .br
-With setting "off", name collisions cause FAILURE events.
+With setting "off", name collisions with at least one non\-directory file
+cause FAILURE events. Collisions of two directories lead to merging of their
+file lists.
+.br
 With setting "nondir", only directories are protected by such events, other
 existing file types get treated with \-rm before the new file gets added.
 Setting "on" enables automatic \-rm_r. I.e. a non\-directory can replace an
diff --git a/xorriso/xorriso.info b/xorriso/xorriso.info
index d2856610..c1a82091 100644
--- a/xorriso/xorriso.info
+++ b/xorriso/xorriso.info
@@ -1350,11 +1350,13 @@ File: xorriso.info,  Node: SetInsert,  Next: Manip,  Prev: Insert,  Up: Commands
 -overwrite "on"|"nondir"|"off"
      Allow or disallow overwriting of existing files in the ISO image by
      files with the same name.
-     With setting "off", name collisions cause FAILURE events.  With
-     setting "nondir", only directories are protected by such events,
-     other existing file types get treated with -rm before the new file
-     gets added.  Setting "on" enables automatic -rm_r.  I.e.  a
-     non-directory can replace an existing directory and all its
+     With setting "off", name collisions with at least one non-directory
+     file cause FAILURE events.  Collisions of two directories lead to
+     merging of their file lists.
+     With setting "nondir", only directories are protected by such
+     events, other existing file types get treated with -rm before the
+     new file gets added.  Setting "on" enables automatic -rm_r.  I.e.
+     a non-directory can replace an existing directory and all its
      subordinates.
      If restoring of files is enabled, then the overwrite rule applies
      to the target file objects on disk as well, but "on" is downgraded
@@ -5404,7 +5406,7 @@ File: xorriso.info,  Node: CommandIdx,  Next: ConceptIdx,  Prev: Legal,  Up: Top
                                                               (line  66)
 * -sleep waits for a given time span:    Scripting.           (line 113)
 * -speed set write speed:                SetWrite.            (line 301)
-* -split_size enables large file splitting: SetInsert.        (line 143)
+* -split_size enables large file splitting: SetInsert.        (line 145)
 * -status shows current settings:        Scripting.           (line  44)
 * -status_history_max curbs -status history: Scripting.       (line  52)
 * -stdio_sync controls stdio buffer:     SetWrite.            (line 386)
@@ -5576,7 +5578,7 @@ File: xorriso.info,  Node: ConceptIdx,  Prev: CommandIdx,  Up: Top
 * Insert, if different, -update_li:      Insert.              (line 124)
 * Insert, if different, -update_lxi:     Insert.              (line 128)
 * Insert, if different, -update_r:       Insert.              (line 110)
-* Insert, large file splitting, -split_size: SetInsert.       (line 143)
+* Insert, large file splitting, -split_size: SetInsert.       (line 145)
 * Insert, limit data file size, -file_size_limit: SetInsert.  (line   7)
 * Insert, links or mount points, -follow: SetInsert.          (line  69)
 * Insert, meaning of = with -add, -pathspecs: SetInsert.      (line 115)
@@ -5765,46 +5767,46 @@ Node: AqDrive28524
 Node: Loading32638
 Node: Insert52745
 Node: SetInsert64248
-Node: Manip73567
-Node: CmdFind83526
-Node: Filter102298
-Node: Writing106920
-Node: SetWrite117076
-Node: Bootable141835
-Node: Jigdo167335
-Node: Charset171594
-Node: Exception174923
-Node: DialogCtl181052
-Node: Inquiry183654
-Node: Navigate192442
-Node: Verify200737
-Node: Restore210615
-Node: Emulation219228
-Node: Scripting229687
-Node: Frontend237470
-Node: Examples247096
-Node: ExDevices248274
-Node: ExCreate248935
-Node: ExDialog250235
-Node: ExGrowing251506
-Node: ExModifying252315
-Node: ExBootable252825
-Node: ExCharset253380
-Node: ExPseudo254276
-Node: ExCdrecord255203
-Node: ExMkisofs255523
-Node: ExGrowisofs256880
-Node: ExException258034
-Node: ExTime258492
-Node: ExIncBackup258950
-Node: ExRestore262976
-Node: ExRecovery263922
-Node: Files264494
-Node: Environ265828
-Node: Seealso266534
-Node: Bugreport267251
-Node: Legal267842
-Node: CommandIdx268854
-Node: ConceptIdx286188
+Node: Manip73680
+Node: CmdFind83639
+Node: Filter102411
+Node: Writing107033
+Node: SetWrite117189
+Node: Bootable141948
+Node: Jigdo167448
+Node: Charset171707
+Node: Exception175036
+Node: DialogCtl181165
+Node: Inquiry183767
+Node: Navigate192555
+Node: Verify200850
+Node: Restore210728
+Node: Emulation219341
+Node: Scripting229800
+Node: Frontend237583
+Node: Examples247209
+Node: ExDevices248387
+Node: ExCreate249048
+Node: ExDialog250348
+Node: ExGrowing251619
+Node: ExModifying252428
+Node: ExBootable252938
+Node: ExCharset253493
+Node: ExPseudo254389
+Node: ExCdrecord255316
+Node: ExMkisofs255636
+Node: ExGrowisofs256993
+Node: ExException258147
+Node: ExTime258605
+Node: ExIncBackup259063
+Node: ExRestore263089
+Node: ExRecovery264035
+Node: Files264607
+Node: Environ265941
+Node: Seealso266647
+Node: Bugreport267364
+Node: Legal267955
+Node: CommandIdx268967
+Node: ConceptIdx286301
 
 End Tag Table
diff --git a/xorriso/xorriso.texi b/xorriso/xorriso.texi
index 1290859e..55a8b1ed 100644
--- a/xorriso/xorriso.texi
+++ b/xorriso/xorriso.texi
@@ -50,7 +50,7 @@
 @c man .\" First parameter, NAME, should be all caps
 @c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 @c man .\" other parameters are allowed: see man(7), man(1)
-@c man .TH XORRISO 1 "Version 1.4.7, Dec 13, 2016"
+@c man .TH XORRISO 1 "Version 1.4.7, Feb 22, 2017"
 @c man .\" Please adjust this date whenever revising the manpage.
 @c man .\"
 @c man .\" Some roff macros, for reference:
@@ -1874,7 +1874,10 @@ and re-enables -disk_pattern expansion.
 Allow or disallow overwriting of existing files in the
 ISO image by files with the same name.
 @*
-With setting "off", name collisions cause FAILURE events.
+With setting "off", name collisions with at least one non-directory file
+cause FAILURE events. Collisions of two directories lead to merging of their
+file lists.
+@*
 With setting "nondir", only directories are protected by such events, other
 existing file types get treated with -rm before the new file gets added.
 Setting "on" enables automatic -rm_r. I.e. a non-directory can replace an