Enable the internals plugin by default in docs (#4335)

* Enable the internals plugin by default in docs

1. Why hide such a useful thing from the users?

2. When playing around with code examples from the docs they may want to know how the resulting html looks.

* Improve doc

* Typo

Co-authored-by: Jeremy Ruston <jeremy@jermolene.com>

editions/de-AT-server/tiddlywiki.info

@@ -3,7 +3,8 @@
 	"plugins": [
 		"tiddlywiki/tiddlyweb",
 		"tiddlywiki/filesystem",
-		"tiddlywiki/highlight"
+		"tiddlywiki/highlight",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/de-AT/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"en-GB",

editions/de-DE/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"en-GB",

editions/dev/tiddlywiki.info

@@ -3,7 +3,8 @@
 	"plugins": [
 		"tiddlywiki/highlight",
 		"tiddlywiki/nodewebkitsaver",
-		"tiddlywiki/github-fork-ribbon"
+		"tiddlywiki/github-fork-ribbon",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/es-ES-server/tiddlywiki.info

@@ -3,7 +3,8 @@
 	"plugins": [
 		"tiddlywiki/tiddlyweb",
 		"tiddlywiki/filesystem",
-		"tiddlywiki/highlight"
+		"tiddlywiki/highlight",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/es-ES/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"es-ES"

editions/fr-FR-server/tiddlywiki.info

@@ -3,7 +3,8 @@
 	"plugins": [
 		"tiddlywiki/tiddlyweb",
 		"tiddlywiki/filesystem",
-		"tiddlywiki/highlight"
+		"tiddlywiki/highlight",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/fr-FR/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"fr-FR"

editions/ja-JP/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"ja-JP"

editions/ko-KR-server/tiddlywiki.info

@@ -3,7 +3,8 @@
 	"plugins": [
 		"tiddlywiki/tiddlyweb",
 		"tiddlywiki/filesystem",
-		"tiddlywiki/highlight"
+		"tiddlywiki/highlight",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/ko-KR/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"ko-KR"

editions/tw5.com-docs/tiddlywiki.info

@@ -1,7 +1,8 @@
 {
 	"description": "Documentation from tw5.com edition",
 	"plugins": [
-		"tiddlywiki/tw5.com-docs"
+		"tiddlywiki/tw5.com-docs",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/tw5.com-server/tiddlywiki.info

@@ -4,7 +4,8 @@
 		"tiddlywiki/tiddlyweb",
 		"tiddlywiki/filesystem",
 		"tiddlywiki/highlight",
-		"tiddlywiki/mobiledragdrop"
+		"tiddlywiki/mobiledragdrop",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/tw5.com/tiddlers/howtos/Text preview.tid

@@ -3,4 +3,12 @@ modified: 20160817104802841
 tags: [[Editor toolbar]]
 title: Text preview
 
-Pressing the eye icon {{$:/core/ui/EditorToolbar/preview}} will open or close a preview window (and the eye) of the text you are editing.
+Pressing the eye icon {{$:/core/ui/EditorToolbar/preview}} will open or close a preview window for your WikiText (The icon-eye will also open or close).
+
+Right to the eye there is another icon, {{$:/core/images/chevron-down}}, which when clicked, shows you a dropdown which gives you access to six different types of preview:
+
+* //output// shows you the text as you see it when you do not edit the tiddler.
+* //html// shows you the [[source code|https://www.w3schools.com/html/html_intro.asp]] of that output. Your web browser uses this source code to display webpages.
+* //parsetree// and //widgettree// show you the two object trees that ~TiddlyWiki internally generates from ~WikiText. The //parsetree// collects basic information about your ~WikiText. From the informations of the parsetree the //widgettree// then generates extended informations and finally the above html (and the widgettree also does other things).
+* //differences from current// shows you the differences since the tiddler was last saved. Deleted parts are <span style="color:red;">red</span>, added parts are <span style="color:green;">green</span>.
+* //differences from shadow (if any)// does the same, but this time it shows you the differences to the underlying [[shadow-tiddler|ShadowTiddlers]].

editions/tw5.com/tiddlywiki.info

@@ -5,6 +5,7 @@
 		"tiddlywiki/browser-sniff",
 		"tiddlywiki/railroad",
 		"tiddlywiki/evernote",
+		"tiddlywiki/internals"
 		"tiddlywiki/menubar"
 	],
 	"themes": [

editions/tw5tank/tiddlywiki.info

@@ -1,7 +1,8 @@
 {
 	"description": "Demo of Tank integration",
 	"plugins": [
-		"tiddlywiki/tiddlyweb"
+		"tiddlywiki/tiddlyweb",
+		"tiddlywiki/internals"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

editions/zh-Hans/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"zh-Hans"

editions/zh-Hant/tiddlywiki.info

@@ -9,7 +9,8 @@
 		"tiddlywiki/seamless",
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
-		"tiddlywiki/readonly"
+		"tiddlywiki/readonly",
+		"tiddlywiki/internals"
 	],
 	"languages": [
 		"zh-Hant"