Add "Focus Tag" page and more connection between animation <-> timeline <-> tags sections

Author: dacap

animation.md

@@ -43,4 +43,5 @@ See the [Onion Skinning](onion-skinning.md) section.
 
 [Timeline](timeline.md) |
 [Onion Skinning](onion-skinning.md) |
-[Continuous Layers](continuous-layers.md)
+[Continuous Layers](continuous-layers.md) |
+[Tags](tags.md)

focus-tag.md

@@ -0,0 +1,23 @@
+# Focus Tag
+
+The [timeline](timeline.md) has the possibility to focus
+[a tag](tags.md), actually a *"tag band."* We define a
+*"tag band"* as these rows where several tags are grouped:
+
+![Tag Bands](focus-tag/bands.gif)
+
+You can double-click one of these bands or press the little button at
+the right side to "focus" the tags in this band (and hide all others):
+
+![Focus Band](focus-tag/focus.gif)
+
+When you do this, the Play button ![Play icon](animation/play-button.png)
+will reproduce only tags found in the currently focused band.
+
+---
+
+**SEE ALSO**
+
+[Tags](tags.md) |
+[Timeline](timeline.md) |
+[Animation](animation.md)

focus-tag/bands.gif

@@ -7,3 +7,11 @@ you can use the *View > Set Loop Section* menu (<kbd>F2</kbd> key) to set the
 animation loop section:
 
 ![Loop Section](loop/loop-section.gif)
+
+The loop section is just like a regular [tag](tags.md) named "Loop."
+
+---
+
+**SEE ALSO**
+
+[Tags](tags.md)

focus-tag/focus.gif

@@ -8,7 +8,7 @@ can organize different animations of your sprite:
 To create a tag you can [select a range](range.md) of frames and use the *Frame >
 Tags > New Tag* menu option, or right-click the range and select *New
 Tag*, or press the *F2* key two times, i.e. the first time will create
-a *"Loop"* tag, the second time you press <kbd>F2</kbd> will show the tag
+a [*"Loop"* tag](loop.md), the second time you press <kbd>F2</kbd> will show the tag
 properties so you can change its name, etc.:
 
 <img src="/docs/tags/tag-properties.png" alt="Tag Properties" class="x2" />

loop.md

@@ -24,6 +24,9 @@ or *Frame > New Frame* menu (<kbd>Alt+N</kbd>) to add frames.
 * [Cels](cel.md):
   * [Move cels](move-cels.md)
   * [Copy cels](copy-cels.md)
+* [Tags](tags.md):
+  * [Loop section](loop.md)
+  * [Focus tag](focus-tag.md)
 
 ## Preferences
 
@@ -49,4 +52,5 @@ documents using *Edit > Copy* and *Edit > Paste*.
 [Animation](animation.md) |
 [Onion Skinning](onion-skinning.md) |
 [Layers](layers.md) |
-[Cel](cel.md)
+[Cel](cel.md) |
+[Tags](tags.md)