diff --git a/doc/man/timew.1.in b/doc/man/timew.1.in
index 07d6d7fe..b710519b 100644
--- a/doc/man/timew.1.in
+++ b/doc/man/timew.1.in
@@ -375,7 +375,7 @@ modification.
 See also 'day', 'week', 'month', 'shorten', 'lengthen', 'tag', 'untag'.
 
 .TP
-.B timew tag @<id> [@<id> ...] <tag> [<tag> ...]
+.B timew tag [@<id> ...] <tag> ...
 The 'tag' command is used to add a tag to an interval. Using the 'summary'
 command, and specifying the ':ids' hint shows interval IDs. Using the right ID,
 you can identify an interval to tag. For example, show the IDs:
@@ -390,6 +390,13 @@ Note that you can tag multiple intervals, with multiple tags:
 
   $ timew tag @2 @10 @23 'Tag One' tag2 tag3
 
+If there is active time tracking, you can omit the ID when you want to add tags to the current open interval:
+
+  $ timew start foo
+  $ timew tag bar
+
+This results in the current interval having tags 'foo' and 'bar'.
+
 See also 'summary', 'shorten', 'lengthen', 'untag'.
 
 .TP
@@ -410,7 +417,7 @@ recording. If a closed interval is not provided, the 'track' command behaves the
 same as the 'start' command.
 
 .TP
-.B timew untag @<id> [@<id> ...] <tag> [<tag> ...]
+.B timew untag [@<id> ...] <tag> ...
 The 'untag' command is used to remove a tag from an interval. Using the 'summary'
 command, and specifying the ':ids' hint shows interval IDs. Using the right ID,
 you can identify an interval to untag. For example, show the IDs:
@@ -425,6 +432,13 @@ Note that you can untag multiple intervals, with multiple tags:
 
   $ timew untag @2 @10 @23 'Old Tag' tag2 tag3
 
+If there is active time tracking, you can omit the ID when you want to remove tags from the current open interval:
+
+  $ timew start foo bar
+  $ timew untag bar
+
+This results in the current interval having tag 'foo' but not 'bar'.
+
 See also 'summary', 'shorten', 'lengthen', 'tag'.
 
 .TP