docs: updates

README

@@ -332,6 +332,13 @@ good for (eg) tracking foreign currency expenses, but not for tracking
 investments with fluctuating value and capital gains.
 
 
+Miscellaneous Tips
+------------------
+
+- when writing a negative amount with a left-side currency symbol, the minus goes after the symbol. Eg ``$-1`` not ``-$1``
+- when combining desc: and not: in a filter pattern, not: goes last. Eg ``desc:not:...`` not ``not:desc:...``.
+
+
 Differences from c++ ledger
 ---------------------------
 
@@ -405,20 +412,14 @@ entries, and the following options and commands::
 Other differences
 .................
 
-* hledger calls the "note" field "description"
 * hledger recognises description and negative patterns by  "desc:" and "not:" prefixes,
   unlike ledger 3's free-form parser
-* hledger keeps differently-priced amounts of the same commodity separate
-* hledger doesn't require a space before command-line option values, eg: -f-
+* hledger doesn't require a space before command-line option values, you can write -f-
 * hledger's weekly reporting intervals always start on mondays
 * hledger shows start and end dates of the intervals requested, not just the span containing data
 * hledger period expressions don't support "biweekly", "bimonthly", or "every N days/weeks/..." 
 * hledger always shows timelog balances in hours
 * hledger splits multi-day timelog sessions at midnight
-* hledger register report always sorts transactions by date
-* hledger doesn't show description comments as part of the description
-* hledger print puts a blank line after a transaction, not before it
-* hledger doesn't print trailing spaces after amount-elided postings
 * hledger doesn't track the value of commodities with varying price;
   prices are fixed as of the transaction date