Terminology and links (#1361)

* Add separate terminology and cross-reference new documentation

* Reword link to extra documentation. Add Terminolgy to README.

Readme.md

@@ -46,6 +46,8 @@ Read this in other languages: English | [简体中文](./Readme_zh-CN.md)
   - [Support](#support)
     - [Commander for enterprise](#commander-for-enterprise)
 
+For information about terms used in this document see: [terminology](./docs/terminology.md)
+
 ## Installation
 
 ```bash
@@ -202,6 +204,8 @@ $ pizza-options --cheese mozzarella
 add cheese type mozzarella
 ```
 
+For information about possible ambiguous cases, see [options taking varying arguments](./docs/options-taking-varying-arguments.md).
+
 ### Custom option processing
 
 You may specify a function to do custom processing of option values. The callback function receives two parameters, the user specified value and the
@@ -311,6 +315,8 @@ Options:  { number: [ '1', '2', '3' ], letter: true }
 Remaining arguments:  [ 'operand' ]
 ```
 
+For information about possible ambiguous cases, see [options taking varying arguments](./docs/options-taking-varying-arguments.md).
+
 ### Version option
 
 The optional `version` method adds handling for displaying the command version. The default option flags are `-V` and `--version`, and when present the command prints the version number and exits.

docs/options-taking-varying-arguments.md

@@ -10,7 +10,6 @@ and subtle issues in depth.
     - [Alternative: Use options instead of command-arguments](#alternative-use-options-instead-of-command-arguments)
   - [Combining short options, and options taking arguments](#combining-short-options-and-options-taking-arguments)
     - [Combining short options as if boolean](#combining-short-options-as-if-boolean)
-  - [Terminology](#terminology)
 
 Certain options take a varying number of arguments:
 
@@ -23,6 +22,8 @@ program
 
 This page uses examples with options taking 0 or 1 arguments, but the discussions also apply to variadic options taking more arguments.
 
+For information about terms used in this document see: [terminology](./terminology.md)
+
 ## Parsing ambiguity
 
 There is a potential downside to be aware of. If a command has both
@@ -140,6 +141,7 @@ $ cook -i -t scrambled
 technique: scrambled
 ingredient: cheese
 ```
+
 ## Combining short options, and options taking arguments
 
 Multiple boolean short options can be combined after a single `-`, like `ls -al`. You can also include just
@@ -197,24 +199,3 @@ To modify the parsing of options taking an optional value:
 .combineFlagAndOptionalValue(true)  // `-v45` is treated like `--vegan=45`, this is the default behaviour
 .combineFlagAndOptionalValue(false) // `-vl` is treated like `-v -l`
 ```
-
-## Terminology
-
-_Work in progress: this section may move to the main README, or a page of its own._
-
-The command line arguments are made up of options, option-arguments, commands, and command-arguments.
-
-| Term | Explanation |
-| --- | --- |
-| option | an argument which is a `-` followed by a character, or `--` followed by a word (or hyphenated words), like `-s` or `--short` |
-| option-argument| some options can take an argument |
-| command | a program or command can have subcommands |
-| command-argument | argument for the command (and not an option or option-argument) |
-
-For example:
-
-```sh
-my-utility command -o --option option-argument command-argument-1 command-argument-2
-```
-
-In other references options are sometimes called flags, and command-arguments are sometimes called positional arguments or operands.

docs/terminology.md

@@ -0,0 +1,18 @@
+# Terminology
+
+The command line arguments are made up of options, option-arguments, commands, and command-arguments.
+
+| Term | Explanation |
+| --- | --- |
+| option | an argument which is a `-` followed by a character, or `--` followed by a word (or hyphenated words), like `-s` or `--short` |
+| option-argument| some options can take an argument |
+| command | a program or command can have subcommands |
+| command-argument | argument for the command (and not an option or option-argument) |
+
+For example:
+
+```sh
+my-utility command -o --option option-argument command-argument-1 command-argument-2
+```
+
+In other references options are sometimes called flags, and command-arguments are sometimes called positional arguments or operands.