Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

```
git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash
```

Closes #11925

docs/content/en/methods/page/_common/scratch-methods.md

@@ -0,0 +1,86 @@
+---
+# Do not remove front matter.
+---
+
+## Methods
+
+###### Set
+
+Sets the value of a given key.
+
+```go-html-template
+{{ .Scratch.Set "greeting" "Hello" }}
+```
+
+###### Get
+
+Gets the value of a given key.
+
+```go-html-template
+{{ .Scratch.Set "greeting" "Hello" }}
+{{ .Scratch.Get "greeting" }} → Hello
+```
+
+###### Add
+
+Adds a given value to existing value(s) of the given key.
+
+For single values, `Add` accepts values that support Go's `+` operator. If the first `Add` for a key is an array or slice, the following adds will be appended to that list.
+
+```go-html-template
+{{ .Scratch.Set "greeting" "Hello" }}
+{{ .Scratch.Add "greeting" "Welcome" }}
+{{ .Scratch.Get "greeting" }} → HelloWelcome
+```
+
+```go-html-template
+{{ .Scratch.Set "total" 3 }}
+{{ .Scratch.Add "total" 7 }}
+{{ .Scratch.Get "total" }} → 10
+```
+
+```go-html-template
+{{ .Scratch.Set "greetings" (slice "Hello") }}
+{{ .Scratch.Add "greetings" (slice "Welcome" "Cheers") }}
+{{ .Scratch.Get "greetings" }} → [Hello Welcome Cheers]
+```
+
+###### SetInMap
+
+Takes a `key`, `mapKey` and `value` and adds a map of `mapKey` and `value` to the given `key`.
+
+```go-html-template
+{{ .Scratch.SetInMap "greetings" "english" "Hello" }}
+{{ .Scratch.SetInMap "greetings" "french" "Bonjour" }}
+{{ .Scratch.Get "greetings" }} → map[english:Hello french:Bonjour]
+```
+
+###### DeleteInMap
+
+Takes a `key` and `mapKey` and removes the map of `mapKey` from the given `key`.
+
+```go-html-template
+{{ .Scratch.SetInMap "greetings" "english" "Hello" }}
+{{ .Scratch.SetInMap "greetings" "french" "Bonjour" }}
+{{ .Scratch.DeleteInMap "greetings" "english" }}
+{{ .Scratch.Get "greetings" }} → map[french:Bonjour]
+```
+
+###### GetSortedMapValues
+
+Returns an array of values from `key` sorted by `mapKey`.
+
+```go-html-template
+{{ .Scratch.SetInMap "greetings" "english" "Hello" }}
+{{ .Scratch.SetInMap "greetings" "french" "Bonjour" }}
+{{ .Scratch.GetSortedMapValues "greetings" }} → [Hello Bonjour]
+```
+
+###### Delete
+
+Removes the given key.
+
+```go-html-template
+{{ .Scratch.Set "greeting" "Hello" }}
+{{ .Scratch.Delete "greeting" }}
+```