Add more terms to glossary

Cleared up meaning of ‘posting’.  Added a few Ledger specific items.

1 files changed, 15 insertions, 1 deletions

diff --git a/doc/GLOSSARY.md b/doc/GLOSSARY.md
index 3e9fbc68..e15d602e 100644
--- a/doc/GLOSSARY.md
+++ b/doc/GLOSSARY.md
@@ -11,4 +11,18 @@ ACCOUNTING GLOSSARY
 
 **Report**:  A summary made from a journal of transactions.  Each transaction affects accounts and those effects are collated and totaled.  The two most common reports are the balance sheet, which shows what is owned and owed on a specific date, and the cash flow statement, which shows how money was earned and spent over a period.   The cash flow statement is also called a profit and loss statement or an income statement.
 
-**Transaction**:  Our financial lives are recorded as a series of transactions.  Each transaction has a specific date, an equal total of debits and credits affecting accounts, and some sort of description.  For example, "On January 1, pay $100 with check #243 from Checking to Utilities for my Verizon phone bill" is a transaction.  A credit of $100 decreases my Checking asset, while a balancing debit of $100 increases my Utility expense.  Transactions can be as complicated as humans can make finances.
+**Transaction**:  Our financial lives are recorded as a series of transactions.  Each transaction has a specific date, an equal total of debits and credits affecting accounts, and some sort of description.  For example, "On January 1, pay $100 with check #243 from Checking to Utilities for my Verizon phone bill" is a transaction.  A credit of $100 decreases my Checking asset, while a balancing debit of $100 increases my Utility expense.  A transaction needs at least two *postings*, meaning account debits or credits, but can be as complicated as humans can make finances.
+
+LEDGER GLOSSARY
+---
+
+The Ledger software also has its own terms.
+
+**Commodity**:  any currency, stock, time or resource to be tracked numerically.  While many people only track money in Ledger, Ledger can track different resources and manage rules to convert between them.  The system is flexible enough for the needs of very different users.   Some track billable time, converting minutes and hours into dollars.   Others track multiple currencies.   Still others track the purchase and sale of stocks.  Each commodity is seperate unless a conversion rule is given.  [§ Commodities and Currencies](http://www.ledger-cli.org/3.0/doc/ledger3.html#Commodities-and-Currencies); [§ Currencies and Commodities](http://www.ledger-cli.org/3.0/doc/ledger3.html#Currency-and-Commodities); [§ Accounts and Inventories](http://www.ledger-cli.org/3.0/doc/ledger3.html#Accounts-and-Inventories); [§ Posting Cost](http://www.ledger-cli.org/3.0/doc/ledger3.html#Posting-cost) *(and next ten sections)*; [§ Commodity Reporting](http://www.ledger-cli.org/3.0/doc/ledger3.html#Commodity-Reporting)
+
+**Transaction Metadata**:  a term for comments and tags annotating a transaction.  Comments indented with a transaction will be stored with each posting of a transaction.  Tags are words in comments followed by colons.  Tags can be used as filters in reports and certain tags, "Payee" or "Value", may affect fields of the transaction.   [§ Metadata](http://www.ledger-cli.org/3.0/doc/ledger3.html#Metadata), [§ Applying Metadata to every matched posting](http://www.ledger-cli.org/3.0/doc/ledger3.html#Applying-metadata-to-every-matched-posting), [§ Applying Metadata to the generated posting](http://www.ledger-cli.org/3.0/doc/ledger3.html#Applying-metadata-to-the-generated-posting)
+
+**Transaction State**: a state of *cleared*, *pending*, or *uncleared* on each posting.  The state is usually set for an entire transaction at once with a mark after the date.  The marks are ***** (cleared), **!** (pending), or no mark (uncleared).  The
+interpretation of this state is up to the user, but is typically used in bank reconcilations or differentiating time worked versus billed.  Ledger supports
+reports and filters based on state.   [§ Transaction State](http://www.ledger-cli.org/3.0/doc/ledger3.html#Transaction-state); [§ Cleared Report](
+http://www.ledger-cli.org/3.0/doc/ledger3.html#Cleared-Report)