diff --git a/docs/development.md b/docs/development.md
index 8db5b9d..3a4aa51 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -7,28 +7,28 @@ Before continuing, make sure you've read:
 3. [Architecture description](architecture.md)
 
 
-## General considerations for plug-ins.
+## General considerations for plugins.
 
-1. Try to find the right place for your plug-in rule:
+1. Try to find the right place for your plugin rule:
   - Will it conflict with existing markup (by priority)?
-    - If yes - you need to write an in-line or block rule.
+    - If yes - you need to write an inline or block rule.
     - If no - you can morph tokens within core chains.
   - Remember that token morphing in core chains is always more simple than writing
-    block or in-line rules, if you don't copy existing ones. However,
-    block and in-line rules are usually faster.
+    block or inline rules, if you don't copy existing ones. However,
+    block and inline rules are usually faster.
   - Sometimes, it's enough to only modify the renderer, for example, to add
     header IDs or `target="_blank"` for the links.
   - Plug-ins should not require the `markdown-it` package as dependency in `package.json`.
     If you need access to internals, those are available via a parser instance,
-    passed on plug-in load. See properties of main class and nested objects.
+    passed on plugin load. See properties of main class and nested objects.
 2. Search existing
-   [plug-ins](https://www.npmjs.org/browse/keyword/markdown-it-plugin)
+   [plugins](https://www.npmjs.org/browse/keyword/markdown-it-plugin)
    or [rules](https://github.com/markdown-it/markdown-it/tree/master/lib),
    doing something similar. It can be more simple to modify existing code,
    instead of writing all from scratch.
 3. If you did all steps above, but still has questions - ask in
    [tracker](https://github.com/markdown-it/markdown-it/issues). But, please:
-   - Be specific. Generic questions like "how to do plug-ins" and
+   - Be specific. Generic questions like "how to do plugins" and
      "how to learn programming" are not accepted.
    - Don't ask us to break [CommonMark](http://commonmark.org/) specification.
      Such things should be discussed first on [CommonMark forum](http://talk.commonmark.org/).
@@ -38,7 +38,7 @@ Before continuing, make sure you've read:
 
 To simplify search:
 
-- add to `package.json` keyswords `markdown-it` and `markdown-it-plugin` for plug-ins.
+- add to `package.json` keyswords `markdown-it` and `markdown-it-plugin` for plugins.
 - add keyword `markdown-it` for any other related packages.
 
 
@@ -69,9 +69,9 @@ See implementations of [linkify](https://github.com/markdown-it/markdown-it/blob
 __Note.__ Don't try to replace text with HTML markup! That's not secure.
 
 
-#### Why my in-line rule is not executed?
+#### Why my inline rule is not executed?
 
-The in-line parser skips pieces of texts to optimize speed. It stops only on [a small set of chars](https://github.com/markdown-it/markdown-it/blob/master/lib/rules_inline/text.js), which can be tokens. We did not made this list extensible for performance reasons too.
+The inline parser skips pieces of texts to optimize speed. It stops only on [a small set of chars](https://github.com/markdown-it/markdown-it/blob/master/lib/rules_inline/text.js), which can be tokens. We did not made this list extensible for performance reasons too.
 
 If you are absolutely sure that something important is missing there - create a
 ticket and we will consider adding it as a new charcode.
@@ -80,7 +80,7 @@ ticket and we will consider adding it as a new charcode.
 #### Why do you reject some useful things?
 
 We do a markdown parser. It should keep the "markdown spirit". Other things should
-be kept separate, in plug-ins, for example. We have no clear criteria, sorry.
+be kept separate, in plugins, for example. We have no clear criteria, sorry.
 Probably, you will find [CommonMark forum](http://talk.commonmark.org/) a useful read to understand us better.
 
 Of course, if you find the architecture of this parser interesting for another type