Add preliminary notes

notes.org

@@ -2,5 +2,25 @@
 * Tasks
 
 * Notes
+** Packages
+*** List
+search() "package:zzz"
 
+*** Content
+objects("package:zzz")
+class("package::zzz")
+
+*** Actions
+detach("package:zzz")
+help("package:zzz")
+help("zzz::fun")
+
+** Objects
+*** List
+ls()
+
+*** Content
+class(unclass(x)) -> list | other
+length(x)
+names(x)
 * Archive