diff --git a/CHANGES.md b/CHANGES.md
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -9,6 +9,21 @@
 User-visible changes in hledger-ui.
 See also the hledger changelog.
 
+# 1.22.1 2021-08-02
+
+Improvements
+
+- Allow megaparsec 9.1.
+
+Fixes
+
+- Up/down keys work on the transaction screen again (broken since 1.22). 
+  (#1607, Stephen Morgan)
+
+- Fix a possible off-by-one bug with valuation date when using `V` key on
+  the transaction screen. (If it ever needs to use the journal's last day
+  as valuation date, use that day, not the day after.)
+
 # 1.22 2021-07-03
 
 Improvements
diff --git a/Hledger/UI/TransactionScreen.hs b/Hledger/UI/TransactionScreen.hs
--- a/Hledger/UI/TransactionScreen.hs
+++ b/Hledger/UI/TransactionScreen.hs
@@ -5,10 +5,8 @@
 {-# LANGUAGE TupleSections     #-}
 
 module Hledger.UI.TransactionScreen
- (transactionScreen
- ,rsSelect
- )
-where
+( transactionScreen
+) where
 
 import Control.Monad
 import Control.Monad.IO.Class (liftIO)
@@ -133,9 +131,7 @@
 tsDraw _ = error "draw function called with wrong screen type, should not happen"  -- PARTIAL:
 
 tsHandle :: UIState -> BrickEvent Name AppEvent -> EventM Name (Next UIState)
-tsHandle ui@UIState{aScreen=s@TransactionScreen{tsTransaction=(i,t)
-                                               ,tsTransactions=nts
-                                               }
+tsHandle ui@UIState{aScreen=TransactionScreen{tsTransaction=(i,t), tsTransactions=nts}
                    ,aopts=UIOpts{cliopts_=copts}
                    ,ajournal=j
                    ,aMode=mode
@@ -181,28 +177,25 @@
         -- EvKey (KChar 'E') [] -> continue $ regenerateScreens j d $ stToggleEmpty ui
         -- EvKey (KChar 'C') [] -> continue $ regenerateScreens j d $ stToggleCleared ui
         -- EvKey (KChar 'R') [] -> continue $ regenerateScreens j d $ stToggleReal ui
-        VtyEvent (EvKey (KChar 'B') []) ->
-          continue $
-          regenerateScreens j d $
-          toggleCost ui
-        VtyEvent (EvKey (KChar 'V') []) ->
-          continue $
-          regenerateScreens j d $
-          toggleValue ui
+        VtyEvent (EvKey (KChar 'B') []) -> continue . regenerateScreens j d $ toggleCost ui
+        VtyEvent (EvKey (KChar 'V') []) -> continue . regenerateScreens j d $ toggleValue ui
 
-        VtyEvent e | e `elem` moveUpEvents   -> continue $ regenerateScreens j d ui{aScreen=s{tsTransaction=(iprev,tprev)}}
-        VtyEvent e | e `elem` moveDownEvents -> continue $ regenerateScreens j d ui{aScreen=s{tsTransaction=(inext,tnext)}}
-        VtyEvent e | e `elem` moveLeftEvents -> continue ui''
-          where
-            ui'@UIState{aScreen=scr} = popScreen ui
-            ui'' = ui'{aScreen=rsSelect (fromIntegral i) scr}
+        VtyEvent e | e `elem` moveUpEvents   -> continue $ tsSelect iprev tprev ui
+        VtyEvent e | e `elem` moveDownEvents -> continue $ tsSelect inext tnext ui
+        VtyEvent e | e `elem` moveLeftEvents -> continue . popScreen $ tsSelect i t ui  -- Probably not necessary to tsSelect here, but it's safe.
         VtyEvent (EvKey (KChar 'l') [MCtrl]) -> redraw ui
         VtyEvent (EvKey (KChar 'z') [MCtrl]) -> suspend ui
         _ -> continue ui
 
 tsHandle _ _ = error "event handler called with wrong screen type, should not happen"  -- PARTIAL:
 
+-- | Select a new transaction and update the previous register screen
+tsSelect i t ui@UIState{aScreen=s@TransactionScreen{}} = case aPrevScreens ui of
+    x:xs -> ui'{aPrevScreens=rsSelect i x : xs}
+    []   -> ui'
+  where ui' = ui{aScreen=s{tsTransaction=(i,t)}}
+tsSelect _ _ ui = ui
+
 -- | Select the nth item on the register screen.
-rsSelect i scr@RegisterScreen{..} = scr{rsList=l'}
-  where l' = listMoveTo (i-1) rsList
+rsSelect i scr@RegisterScreen{..} = scr{rsList=listMoveTo (fromInteger $ i-1) rsList}
 rsSelect _ scr = scr
diff --git a/hledger-ui.1 b/hledger-ui.1
--- a/hledger-ui.1
+++ b/hledger-ui.1
@@ -1,5 +1,5 @@
 
-.TH "HLEDGER-UI" "1" "July 2021" "hledger-ui-1.22 " "hledger User Manuals"
+.TH "HLEDGER-UI" "1" "August 2021" "hledger-ui-1.22.1 " "hledger User Manuals"
 
 
 
@@ -7,7 +7,7 @@
 .PP
 hledger-ui is a terminal interface (TUI) for the hledger accounting
 tool.
-This manual is for hledger-ui 1.22.
+This manual is for hledger-ui 1.22.1.
 .SH SYNOPSIS
 .PP
 \f[C]hledger-ui [OPTIONS] [QUERYARGS]\f[R]
@@ -302,12 +302,6 @@
 active; for now pressing \f[C]b\f[R] \f[C]b\f[R] \f[C]v\f[R] should
 reliably reset to normal mode.
 .PP
-With \f[C]--watch\f[R] active, if you save an edit to the journal file
-while viewing the transaction screen in cost or value mode, the
-\f[C]B\f[R]/\f[C]V\f[R] keys will stop working.
-To work around, press \f[C]g\f[R] to force a manual reload, or exit the
-transaction screen.
-.PP
 \f[C]q\f[R] quits the application.
 .PP
 Additional screen-specific keys are described below.
@@ -439,6 +433,58 @@
 Once you have fixed the problem, press g again to reload and resume
 normal operation.
 (Or, you can press escape to cancel the reload attempt.)
+.SH TIPS
+.SS Watch mode
+.PP
+One of hledger-ui\[aq]s best features is the auto-reloading
+\f[C]--watch\f[R] mode.
+With this flag, it will update the display automatically whenever
+changes are saved to the data files.
+.PP
+This is very useful when reconciling.
+A good workflow is to have your bank\[aq]s online register open in a
+browser window, for reference; the journal file open in an editor
+window; and hledger-ui in watch mode in a terminal window, eg:
+.IP
+.nf
+\f[C]
+$ hledger-ui --watch --register checking -C
+\f[R]
+.fi
+.PP
+As you mark things cleared in the editor, you can see the effect
+immediately without having to context switch.
+This leaves more mental bandwidth for your accounting.
+Of course you can still interact with hledger-ui when needed, eg to
+toggle cleared mode, or to explore the history.
+.SS Watch mode limitations
+.PP
+There are situations in which it won\[aq]t work, ie the display will not
+update when you save a change (because the underlying \f[C]inotify\f[R]
+library does not support it).
+Here are some that we know of:
+.IP \[bu] 2
+Certain editors: saving with \f[C]gedit\f[R], and perhaps any Gnome
+application, won\[aq]t be detected (#1617).
+Jetbrains IDEs, such as IDEA, also may not work (#911).
+.IP \[bu] 2
+Certain unusual filesystems might not be supported.
+(All the usual ones on unix, mac and windows are supported.)
+.PP
+In such cases, the workaround is to switch to the hledger-ui window and
+press \f[C]g\f[R] each time you want it to reload.
+(Actually, see #1617 for another workaround, and let us know if it works
+for you.)
+.PP
+If you leave \f[C]hledger-ui --watch\f[R] running for days, on certain
+platforms (?), perhaps with many transactions in your journal (?),
+perhaps with large numbers of other files present (?), you may see it
+gradually using more and more memory and CPU over time, as seen in
+\f[C]top\f[R] or Activity Monitor or Task Manager.
+.PP
+A workaround is to \f[C]q\f[R]uit and restart it, or to suspend it
+(\f[C]CTRL-z\f[R]) and restart it (\f[C]fg\f[R]) if your shell supports
+that.
 .SH ENVIRONMENT
 .PP
 \f[B]COLUMNS\f[R] The screen width to use.
diff --git a/hledger-ui.cabal b/hledger-ui.cabal
--- a/hledger-ui.cabal
+++ b/hledger-ui.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           hledger-ui
-version:        1.22
+version:        1.22.1
 synopsis:       Curses-style terminal interface for the hledger accounting system
 description:    A simple curses-style terminal user interface for the hledger accounting system.
                 It can be a more convenient way to browse your accounts than the CLI.
@@ -63,7 +63,7 @@
   hs-source-dirs:
       ./
   ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans
-  cpp-options: -DVERSION="1.22"
+  cpp-options: -DVERSION="1.22.1"
   build-depends:
       ansi-terminal >=0.9
     , async
@@ -77,9 +77,9 @@
     , extra >=1.6.3
     , filepath
     , fsnotify >=0.2.1.2 && <0.4
-    , hledger ==1.22.*
-    , hledger-lib ==1.22.*
-    , megaparsec >=7.0.0 && <9.1
+    , hledger >=1.22.1 && <1.23
+    , hledger-lib >=1.22.1 && <1.23
+    , megaparsec >=7.0.0 && <9.2
     , microlens >=0.4
     , microlens-platform >=0.2.3.1
     , process >=1.2
diff --git a/hledger-ui.info b/hledger-ui.info
--- a/hledger-ui.info
+++ b/hledger-ui.info
@@ -1,8 +1,8 @@
-This is hledger-ui.info, produced by makeinfo version 6.7 from stdin.
+This is hledger-ui.info, produced by makeinfo version 6.8 from stdin.
 
 INFO-DIR-SECTION User Applications
 START-INFO-DIR-ENTRY
-* hledger-ui: (hledger-ui/hledger-ui).  Terminal UI for the hledger accounting tool.
+* hledger-ui: (hledger-ui).  Terminal UI for the hledger accounting tool.
 END-INFO-DIR-ENTRY
 
 
@@ -12,7 +12,7 @@
 *************
 
 hledger-ui is a terminal interface (TUI) for the hledger accounting
-tool.  This manual is for hledger-ui 1.22.
+tool.  This manual is for hledger-ui 1.22.1.
 
    'hledger-ui [OPTIONS] [QUERYARGS]'
 'hledger ui -- [OPTIONS] [QUERYARGS]'
@@ -44,6 +44,7 @@
 * OPTIONS::
 * KEYS::
 * SCREENS::
+* TIPS::
 * ENVIRONMENT::
 * FILES::
 * BUGS::
@@ -311,17 +312,12 @@
 active; for now pressing 'b' 'b' 'v' should reliably reset to normal
 mode.
 
-   With '--watch' active, if you save an edit to the journal file while
-viewing the transaction screen in cost or value mode, the 'B'/'V' keys
-will stop working.  To work around, press 'g' to force a manual reload,
-or exit the transaction screen.
-
    'q' quits the application.
 
    Additional screen-specific keys are described below.
 
 
-File: hledger-ui.info,  Node: SCREENS,  Next: ENVIRONMENT,  Prev: KEYS,  Up: Top
+File: hledger-ui.info,  Node: SCREENS,  Next: TIPS,  Prev: KEYS,  Up: Top
 
 3 SCREENS
 *********
@@ -465,9 +461,73 @@
 to cancel the reload attempt.)
 
 
-File: hledger-ui.info,  Node: ENVIRONMENT,  Next: FILES,  Prev: SCREENS,  Up: Top
+File: hledger-ui.info,  Node: TIPS,  Next: ENVIRONMENT,  Prev: SCREENS,  Up: Top
 
-4 ENVIRONMENT
+4 TIPS
+******
+
+* Menu:
+
+* Watch mode::
+* Watch mode limitations::
+
+
+File: hledger-ui.info,  Node: Watch mode,  Next: Watch mode limitations,  Up: TIPS
+
+4.1 Watch mode
+==============
+
+One of hledger-ui's best features is the auto-reloading '--watch' mode.
+With this flag, it will update the display automatically whenever
+changes are saved to the data files.
+
+   This is very useful when reconciling.  A good workflow is to have
+your bank's online register open in a browser window, for reference; the
+journal file open in an editor window; and hledger-ui in watch mode in a
+terminal window, eg:
+
+$ hledger-ui --watch --register checking -C
+
+   As you mark things cleared in the editor, you can see the effect
+immediately without having to context switch.  This leaves more mental
+bandwidth for your accounting.  Of course you can still interact with
+hledger-ui when needed, eg to toggle cleared mode, or to explore the
+history.
+
+
+File: hledger-ui.info,  Node: Watch mode limitations,  Prev: Watch mode,  Up: TIPS
+
+4.2 Watch mode limitations
+==========================
+
+There are situations in which it won't work, ie the display will not
+update when you save a change (because the underlying 'inotify' library
+does not support it).  Here are some that we know of:
+
+   * Certain editors: saving with 'gedit', and perhaps any Gnome
+     application, won't be detected (#1617).  Jetbrains IDEs, such as
+     IDEA, also may not work (#911).
+
+   * Certain unusual filesystems might not be supported.  (All the usual
+     ones on unix, mac and windows are supported.)
+
+   In such cases, the workaround is to switch to the hledger-ui window
+and press 'g' each time you want it to reload.  (Actually, see #1617 for
+another workaround, and let us know if it works for you.)
+
+   If you leave 'hledger-ui --watch' running for days, on certain
+platforms (?), perhaps with many transactions in your journal (?),
+perhaps with large numbers of other files present (?), you may see it
+gradually using more and more memory and CPU over time, as seen in 'top'
+or Activity Monitor or Task Manager.
+
+   A workaround is to 'q'uit and restart it, or to suspend it ('CTRL-z')
+and restart it ('fg') if your shell supports that.
+
+
+File: hledger-ui.info,  Node: ENVIRONMENT,  Next: FILES,  Prev: TIPS,  Up: Top
+
+5 ENVIRONMENT
 *************
 
 *COLUMNS* The screen width to use.  Default: the full terminal width.
@@ -495,7 +555,7 @@
 
 File: hledger-ui.info,  Node: FILES,  Next: BUGS,  Prev: ENVIRONMENT,  Up: Top
 
-5 FILES
+6 FILES
 *******
 
 Reads data from one or more files in hledger journal, timeclock,
@@ -506,7 +566,7 @@
 
 File: hledger-ui.info,  Node: BUGS,  Prev: FILES,  Up: Top
 
-6 BUGS
+7 BUGS
 ******
 
 The need to precede options with '--' when invoked from hledger is
@@ -533,26 +593,37 @@
 
 
 Tag Table:
-Node: Top232
+Node: Top221
 Node: OPTIONS1646
 Ref: #options1743
 Node: KEYS6144
 Ref: #keys6239
-Node: SCREENS10558
-Ref: #screens10663
-Node: Accounts screen10753
-Ref: #accounts-screen10881
-Node: Register screen13096
-Ref: #register-screen13251
-Node: Transaction screen15248
-Ref: #transaction-screen15406
-Node: Error screen16276
-Ref: #error-screen16398
-Node: ENVIRONMENT16642
-Ref: #environment16756
-Node: FILES17563
-Ref: #files17662
-Node: BUGS17875
-Ref: #bugs17952
+Node: SCREENS10310
+Ref: #screens10408
+Node: Accounts screen10498
+Ref: #accounts-screen10626
+Node: Register screen12841
+Ref: #register-screen12996
+Node: Transaction screen14993
+Ref: #transaction-screen15151
+Node: Error screen16021
+Ref: #error-screen16143
+Node: TIPS16387
+Ref: #tips16486
+Node: Watch mode16538
+Ref: #watch-mode16655
+Node: Watch mode limitations17401
+Ref: #watch-mode-limitations17542
+Node: ENVIRONMENT18678
+Ref: #environment18789
+Node: FILES19596
+Ref: #files19695
+Node: BUGS19908
+Ref: #bugs19985
 
 End Tag Table
+
+
+Local Variables:
+coding: utf-8
+End:
diff --git a/hledger-ui.txt b/hledger-ui.txt
--- a/hledger-ui.txt
+++ b/hledger-ui.txt
@@ -5,7 +5,7 @@
 
 NAME
        hledger-ui  is  a  terminal  interface (TUI) for the hledger accounting
-       tool.  This manual is for hledger-ui 1.22.
+       tool.  This manual is for hledger-ui 1.22.1.
 
 SYNOPSIS
        hledger-ui [OPTIONS] [QUERYARGS]
@@ -276,55 +276,50 @@
        There's not yet any visual reminder when cost or value mode is  active;
        for now pressing b b v should reliably reset to normal mode.
 
-       With  --watch  active,  if  you  save an edit to the journal file while
-       viewing the transaction screen in cost or value mode, the B/V keys will
-       stop  working.   To  work  around, press g to force a manual reload, or
-       exit the transaction screen.
-
        q quits the application.
 
        Additional screen-specific keys are described below.
 
 SCREENS
    Accounts screen
-       This is normally the first screen displayed.   It  lists  accounts  and
-       their  balances,  like hledger's balance command.  By default, it shows
-       all accounts and their latest ending balances (including  the  balances
-       of  subaccounts).  If you specify a query on the command line, it shows
+       This  is  normally  the  first screen displayed.  It lists accounts and
+       their balances, like hledger's balance command.  By default,  it  shows
+       all  accounts  and their latest ending balances (including the balances
+       of subaccounts).  If you specify a query on the command line, it  shows
        just the matched accounts and the balances from matched transactions.
 
-       Account names are shown as a flat list by default; press  t  to  toggle
-       tree  mode.   In  list  mode,  account balances are exclusive of subac-
-       counts, except where subaccounts are  hidden  by  a  depth  limit  (see
-       below).   In  tree  mode,  all account balances are inclusive of subac-
+       Account  names  are  shown as a flat list by default; press t to toggle
+       tree mode.  In list mode, account  balances  are  exclusive  of  subac-
+       counts,  except  where  subaccounts  are  hidden  by a depth limit (see
+       below).  In tree mode, all account balances  are  inclusive  of  subac-
        counts.
 
-       To see less detail, press a number key, 1 to 9, to set a  depth  limit.
+       To  see  less detail, press a number key, 1 to 9, to set a depth limit.
        Or use - to decrease and +/= to increase the depth limit.  0 shows even
-       less detail, collapsing all accounts to a single total.  To remove  the
-       depth  limit,  set  it  higher than the maximum account depth, or press
+       less  detail, collapsing all accounts to a single total.  To remove the
+       depth limit, set it higher than the maximum  account  depth,  or  press
        ESCAPE.
 
        H toggles between showing historical balances or period balances.  His-
-       torical  balances  (the  default) are ending balances at the end of the
-       report period, taking into account all transactions  before  that  date
-       (filtered  by  the  filter query if any), including transactions before
-       the start of the report period.  In other  words,  historical  balances
-       are  what  you  would  see on a bank statement for that account (unless
-       disturbed by a filter  query).   Period  balances  ignore  transactions
+       torical balances (the default) are ending balances at the  end  of  the
+       report  period,  taking  into account all transactions before that date
+       (filtered by the filter query if any),  including  transactions  before
+       the  start  of  the report period.  In other words, historical balances
+       are what you would see on a bank statement  for  that  account  (unless
+       disturbed  by  a  filter  query).   Period balances ignore transactions
        before the report start date, so they show the change in balance during
        the report period.  They are more useful eg when viewing a time log.
 
        U toggles filtering by unmarked status, including or excluding unmarked
        postings in the balances.  Similarly, P toggles pending postings, and C
-       toggles cleared postings.  (By default, balances include all  postings;
-       if  you  activate  one  or  two status filters, only those postings are
+       toggles  cleared postings.  (By default, balances include all postings;
+       if you activate one or two status  filters,  only  those  postings  are
        included; and if you activate all three, the filter is removed.)
 
        R toggles real mode, in which virtual postings are ignored.
 
-       Z toggles nonzero mode, in which only accounts  with  nonzero  balances
-       are  shown (hledger-ui shows zero items by default, unlike command-line
+       Z  toggles  nonzero  mode, in which only accounts with nonzero balances
+       are shown (hledger-ui shows zero items by default, unlike  command-line
        hledger).
 
        Press right or enter to view an account's transactions register.
@@ -333,66 +328,110 @@
        This screen shows the transactions affecting a particular account, like
        a check register.  Each line represents one transaction and shows:
 
-       o the  other  account(s)  involved, in abbreviated form.  (If there are
-         both real and virtual postings, it shows only the  accounts  affected
+       o the other account(s) involved, in abbreviated form.   (If  there  are
+         both  real  and virtual postings, it shows only the accounts affected
          by real postings.)
 
-       o the  overall change to the current account's balance; positive for an
+       o the overall change to the current account's balance; positive for  an
          inflow to this account, negative for an outflow.
 
        o the running historical total or period total for the current account,
-         after  the  transaction.  This can be toggled with H.  Similar to the
-         accounts screen, the historical total  is  affected  by  transactions
-         (filtered  by  the  filter query) before the report start date, while
+         after the transaction.  This can be toggled with H.  Similar  to  the
+         accounts  screen,  the  historical  total is affected by transactions
+         (filtered by the filter query) before the report  start  date,  while
          the period total is not.  If the historical total is not disturbed by
-         a  filter  query, it will be the running historical balance you would
+         a filter query, it will be the running historical balance  you  would
          see on a bank register for the current account.
 
-       Transactions affecting this account's subaccounts will be  included  in
+       Transactions  affecting  this account's subaccounts will be included in
        the register if the accounts screen is in tree mode, or if it's in list
-       mode but this account has subaccounts which are  not  shown  due  to  a
-       depth  limit.   In  other words, the register always shows the transac-
-       tions contributing to the balance shown on the accounts  screen.   Tree
+       mode  but  this  account  has  subaccounts which are not shown due to a
+       depth limit.  In other words, the register always  shows  the  transac-
+       tions  contributing  to the balance shown on the accounts screen.  Tree
        mode/list mode can be toggled with t here also.
 
-       U  toggles  filtering  by  unmarked  status, showing or hiding unmarked
+       U toggles filtering by unmarked  status,  showing  or  hiding  unmarked
        transactions.  Similarly, P toggles pending transactions, and C toggles
-       cleared  transactions.  (By default, transactions with all statuses are
-       shown; if you activate one or two status filters, only  those  transac-
+       cleared transactions.  (By default, transactions with all statuses  are
+       shown;  if  you activate one or two status filters, only those transac-
        tions are shown; and if you activate all three, the filter is removed.)
 
        R toggles real mode, in which virtual postings are ignored.
 
-       Z toggles nonzero mode, in which only transactions  posting  a  nonzero
-       change  are  shown (hledger-ui shows zero items by default, unlike com-
+       Z  toggles  nonzero  mode, in which only transactions posting a nonzero
+       change are shown (hledger-ui shows zero items by default,  unlike  com-
        mand-line hledger).
 
        Press right (or enter) to view the selected transaction in detail.
 
    Transaction screen
-       This screen shows a single transaction, as  a  general  journal  entry,
-       similar  to  hledger's  print command and journal format (hledger_jour-
+       This  screen  shows  a  single transaction, as a general journal entry,
+       similar to hledger's print command and  journal  format  (hledger_jour-
        nal(5)).
 
-       The transaction's date(s)  and  any  cleared  flag,  transaction  code,
-       description,  comments,  along  with  all  of  its account postings are
-       shown.  Simple transactions have two postings, but there  can  be  more
+       The  transaction's  date(s)  and  any  cleared  flag, transaction code,
+       description, comments, along with  all  of  its  account  postings  are
+       shown.   Simple  transactions  have two postings, but there can be more
        (or in certain cases, fewer).
 
-       up  and  down will step through all transactions listed in the previous
-       account register screen.  In the title bar, the numbers in  parentheses
-       show  your  position  within  that  account  register.   They will vary
+       up and down will step through all transactions listed in  the  previous
+       account  register screen.  In the title bar, the numbers in parentheses
+       show your position  within  that  account  register.   They  will  vary
        depending on which account register you came from (remember most trans-
        actions appear in multiple account registers).  The #N number preceding
        them is the transaction's position within the complete unfiltered jour-
        nal, which is a more stable id (at least until the next reload).
 
    Error screen
-       This  screen  will appear if there is a problem, such as a parse error,
-       when you press g to reload.  Once you have fixed the problem,  press  g
+       This screen will appear if there is a problem, such as a  parse  error,
+       when  you  press g to reload.  Once you have fixed the problem, press g
        again to reload and resume normal operation.  (Or, you can press escape
        to cancel the reload attempt.)
 
+TIPS
+   Watch mode
+       One  of  hledger-ui's best features is the auto-reloading --watch mode.
+       With this flag, it  will  update  the  display  automatically  whenever
+       changes are saved to the data files.
+
+       This  is very useful when reconciling.  A good workflow is to have your
+       bank's online register open in a browser  window,  for  reference;  the
+       journal  file open in an editor window; and hledger-ui in watch mode in
+       a terminal window, eg:
+
+              $ hledger-ui --watch --register checking -C
+
+       As you mark things cleared in the editor, you can see the effect  imme-
+       diately  without  having  to  context  switch.  This leaves more mental
+       bandwidth for your accounting.  Of course you can still  interact  with
+       hledger-ui  when  needed,  eg to toggle cleared mode, or to explore the
+       history.
+
+   Watch mode limitations
+       There are situations in which it won't work, ie the  display  will  not
+       update  when  you save a change (because the underlying inotify library
+       does not support it).  Here are some that we know of:
+
+       o Certain editors: saving with gedit, and perhaps  any  Gnome  applica-
+         tion,  won't be detected (#1617).  Jetbrains IDEs, such as IDEA, also
+         may not work (#911).
+
+       o Certain unusual filesystems might not be supported.  (All  the  usual
+         ones on unix, mac and windows are supported.)
+
+       In such cases, the workaround is to switch to the hledger-ui window and
+       press g each time you want it to  reload.   (Actually,  see  #1617  for
+       another workaround, and let us know if it works for you.)
+
+       If  you leave hledger-ui --watch running for days, on certain platforms
+       (?), perhaps with many transactions in your journal (?),  perhaps  with
+       large  numbers  of  other  files  present (?), you may see it gradually
+       using more and more memory and CPU over time, as seen in top or  Activ-
+       ity Monitor or Task Manager.
+
+       A  workaround  is to quit and restart it, or to suspend it (CTRL-z) and
+       restart it (fg) if your shell supports that.
+
 ENVIRONMENT
        COLUMNS The screen width to use.  Default: the full terminal width.
 
@@ -465,4 +504,4 @@
 
 
 
-hledger-ui-1.22                    July 2021                     HLEDGER-UI(1)
+hledger-ui-1.22.1                 August 2021                    HLEDGER-UI(1)
