diff --git a/doc/Protocol-A.texi b/doc/Protocol-A.texi
index ac23c4e6c273e74b23b6f355ff4f045c885ab549..11a709a2affe0d7c6234cb6d7ff919e04a95073b 100644
--- a/doc/Protocol-A.texi
+++ b/doc/Protocol-A.texi
@@ -2580,8 +2580,10 @@ A client-supplied string saying what the person is currently doing.
 @item username
 The name of the ``real'' user (see @type{Who-Info} above.)
 @item idle-time
-@c FIXME (bug 197): should this be user-active-call?
-The number of seconds since the last server call.
+The number of seconds since @reqdlink{user-active} was used by this
+session@linkhere{}, or since the session was created if
+@req{user-active} has not been used yet.  See also
+@field{user-active-used} below.
 @item connection-time
 The time when the connection was initiated.  This is not the same as the
 amount of time the person has been on.
@@ -2606,7 +2608,10 @@ The user name according to the Ident @daemon{}
 at the user's machine or ``unknown''
 if Ident was not used.
 @item idle-time
-The number of seconds since the last server call.
+The number of seconds since @reqdlink{user-active} was used by this
+session@linkhere{}, or since the session was created if
+@req{user-active} has not been used yet.  See also
+@field{user-active-used} below.
 @item connection-time
 The time when the connection was initiated.  This is not the same as the
 amount of time the person has been on.
@@ -2637,8 +2642,11 @@ Sessions where no-one is logged in also have the @field{invisible} flag
 set.
 @item user-active-used
 When true, the @reqdlink{user-active} call@linkhere{} has been issued by
-the session, which in turn means that @field{idle-time} field in the
-@type{Dynamic-Session-Info} is valid.
+the session, which in turn means that @field{idle-time} fields of
+@type{Dynamic-Session-Info}, @type{Session-Info} and
+@type{Session-Info-Ident} are valid.  When false, the
+@field{idle-time} fields contains the number of seconds since the
+session was created.
 @item user-absent
 This flag is currently not used.
 @end table
@@ -2654,8 +2662,10 @@ logged on.
 @item working-conference
 The conference the session is currently in.
 @item idle-time
-The number of seconds that have passed since the last time
-@reqlink{user-active} was called in the session.
+The number of seconds since @reqdlink{user-active} was used by this
+session@linkhere{}, or since the session was created if
+@req{user-active} has not been used yet.  See also
+@field{user-active-used} above.
 @item flags
 The dynamic session flags (see above.)
 @item what-am-i-doing