Repo refactor: rename "website" to "docs"

docs/Task.md

@@ -0,0 +1,33 @@
+---
+description: A checkbox item tracked as a queryable object.
+tags: glossary
+---
+
+The task notation syntax is a [[Markdown]] extension to write down tasks.
+
+Its most basic form is:
+
+    * [ ] This is my first task
+
+which renders as follows:
+
+* [ ] This is my first task
+
+SilverBullet allows you to simply toggle the complete state of a task by clicking the checkbox.
+
+All tasks across your space are automatically [[Object/task|indexed]] and can therefore be [[Space Lua/Integrated Query|queried]].
+
+# Custom states
+Tasks support the default `x` and ` ` states (done and not done), but custom states as well. Support for this is still basic, however.
+
+Example:
+
+* [NOT STARTED] Task 1
+  Fix having global variables work in markdown.expandMarkdown
+* [IN PROGRESS] Task 2
+
+Restrictions:
+
+* Task states cannot contain `:` to avoid ambiguity with [[Attribute]] syntax.
+
+To define custom states explicitly (and get code completion for them), use the [[API/taskState]] API.