diff --git a/crates/nu-command/src/core_commands/register.rs b/crates/nu-command/src/core_commands/register.rs
index 22015b2176..bc9829a9ce 100644
--- a/crates/nu-command/src/core_commands/register.rs
+++ b/crates/nu-command/src/core_commands/register.rs
@@ -54,13 +54,13 @@ impl Command for Register {
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {
-                description: "Register `nu_plugin_extra_query` plugin from ~/.cargo/bin/ dir",
-                example: r#"register -e capnp ~/.cargo/bin/nu_plugin_extra_query"#,
+                description: "Register `nu_plugin_query` plugin from ~/.cargo/bin/ dir",
+                example: r#"register -e capnp ~/.cargo/bin/nu_plugin_query"#,
                 result: None,
             },
             Example {
-                description: "Register `nu_plugin_extra_query` plugin from `nu -c`(plugin will be available in that nu session only)",
-                example: r#"let plugin = ((which nu).path.0 | path dirname | path join 'nu_plugin_extra_query'); nu -c $'register -e capnp ($plugin); version'"#,
+                description: "Register `nu_plugin_query` plugin from `nu -c`(plugin will be available in that nu session only)",
+                example: r#"let plugin = ((which nu).path.0 | path dirname | path join 'nu_plugin_query'); nu -c $'register -e capnp ($plugin); version'"#,
                 result: None,
             },
         ]
diff --git a/docs/commands/each_group.md b/docs/commands/each_group.md
deleted file mode 100644
index c49f59962c..0000000000
--- a/docs/commands/each_group.md
+++ /dev/null
@@ -1,23 +0,0 @@
----
-title: each group
-layout: command
-version: 0.59.1
----
-
-Runs a block on groups of `group_size` rows of a table at a time.
-
-## Signature
-
-```> each group (group_size) (block)```
-
-## Parameters
-
- -  `group_size`: the size of each group
- -  `block`: the block to run on each group
-
-## Examples
-
-Echo the sum of each pair
-```shell
-> echo [1 2 3 4] | each group 2 { |it| $it.0 + $it.1 }
-```
diff --git a/docs/commands/each_window.md b/docs/commands/each_window.md
deleted file mode 100644
index ba80fcad97..0000000000
--- a/docs/commands/each_window.md
+++ /dev/null
@@ -1,29 +0,0 @@
----
-title: each window
-layout: command
-version: 0.59.1
----
-
-Runs a block on window groups of `window_size` that slide by n rows.
-
-## Signature
-
-```> each window (window_size) (block) --stride```
-
-## Parameters
-
- -  `window_size`: the size of each window
- -  `block`: the block to run on each window
- -  `--stride {int}`: the number of rows to slide over between windows
-
-## Examples
-
-A sliding window of two elements
-```shell
-> echo [1 2 3 4] | each window 2 { |it| $it.0 + $it.1 }
-```
-
-A sliding window of two elements, with a stride of 3
-```shell
-> [1, 2, 3, 4, 5, 6, 7, 8] | each window 2 --stride 3 { |x| $x.0 + $x.1 }
-```
diff --git a/docs/commands/group.md b/docs/commands/group.md
new file mode 100644
index 0000000000..83fb88f6d8
--- /dev/null
+++ b/docs/commands/group.md
@@ -0,0 +1,22 @@
+---
+title: group
+layout: command
+version: 0.59.1
+---
+
+Groups input into groups of `group_size`.
+
+## Signature
+
+```> group (group_size)```
+
+## Parameters
+
+ -  `group_size`: the size of each group
+
+## Examples
+
+Group the a list by pairs
+```shell
+> echo [1 2 3 4] | group 2
+```
diff --git a/docs/commands/gstat.md b/docs/commands/gstat.md
index 1b0138bf01..0fc7353a5a 100644
--- a/docs/commands/gstat.md
+++ b/docs/commands/gstat.md
@@ -1,7 +1,7 @@
 ---
 title: gstat
 layout: command
-version: 0.59.0
+version: 0.59.1
 ---
 
 Get the git status of a repo
diff --git a/docs/commands/par-each_group.md b/docs/commands/par-each_group.md
deleted file mode 100644
index f095b73ef7..0000000000
--- a/docs/commands/par-each_group.md
+++ /dev/null
@@ -1,23 +0,0 @@
----
-title: par-each group
-layout: command
-version: 0.59.1
----
-
-Runs a block on groups of `group_size` rows of a table at a time.
-
-## Signature
-
-```> par-each group (group_size) (block)```
-
-## Parameters
-
- -  `group_size`: the size of each group
- -  `block`: the block to run on each group
-
-## Examples
-
-Multiplies elements in list
-```shell
-> echo [1 2 3 4] | par-each group 2 {|it| $it.0 + $it.1 }
-```
diff --git a/docs/commands/post.md b/docs/commands/post.md
index 30fcfa6e35..e5a781fb0b 100644
--- a/docs/commands/post.md
+++ b/docs/commands/post.md
@@ -38,3 +38,8 @@ Post content to url.com, with custom header
 ```shell
 > post -H [my-header-key my-header-value] url.com
 ```
+
+Post content to url.com with a json body
+```shell
+> post -t application/json url.com { field: value }
+```
diff --git a/docs/commands/register.md b/docs/commands/register.md
index e34d782dc7..d40aa5baef 100644
--- a/docs/commands/register.md
+++ b/docs/commands/register.md
@@ -19,12 +19,12 @@ Register a plugin
 
 ## Examples
 
-Register `nu_plugin_extra_query` plugin from ~/.cargo/bin/ dir
+Register `nu_plugin_query` plugin from ~/.cargo/bin/ dir
 ```shell
-> register -e capnp ~/.cargo/bin/nu_plugin_extra_query
+> register -e capnp ~/.cargo/bin/nu_plugin_query
 ```
 
-Register `nu_plugin_extra_query` plugin from `nu -c`(plugin will be available in that nu session only)
+Register `nu_plugin_query` plugin from `nu -c`(plugin will be available in that nu session only)
 ```shell
-> let plugin = ((which nu).path.0 | path dirname | path join 'nu_plugin_extra_query'); nu -c $'register -e capnp ($plugin); version'
+> let plugin = ((which nu).path.0 | path dirname | path join 'nu_plugin_query'); nu -c $'register -e capnp ($plugin); version'
 ```
diff --git a/docs/commands/save.md b/docs/commands/save.md
index ce335af24c..5f379572df 100644
--- a/docs/commands/save.md
+++ b/docs/commands/save.md
@@ -8,12 +8,13 @@ Save a file.
 
 ## Signature
 
-```> save (filename) --raw```
+```> save (filename) --raw --append```
 
 ## Parameters
 
  -  `filename`: the filename to use
  -  `--raw`: save file as raw binary
+ -  `--append`: append input to the end of the file
 
 ## Examples
 
diff --git a/docs/commands/str_contains.md b/docs/commands/str_contains.md
index aa105cf917..929353c34d 100644
--- a/docs/commands/str_contains.md
+++ b/docs/commands/str_contains.md
@@ -8,13 +8,14 @@ Checks if string contains pattern
 
 ## Signature
 
-```> str contains (pattern) ...rest --insensitive```
+```> str contains (pattern) ...rest --insensitive --not```
 
 ## Parameters
 
  -  `pattern`: the pattern to find
  -  `...rest`: optionally check if string contains pattern by column paths
  -  `--insensitive`: search is case insensitive
+ -  `--not`: does not contain
 
 ## Examples
 
@@ -47,3 +48,13 @@ Check if string contains pattern
 ```shell
 > 'hello' | str contains 'banana'
 ```
+
+Check if list contains pattern
+```shell
+> [one two three] | str contains o
+```
+
+Check if list does not contain pattern
+```shell
+> [one two three] | str contains -n o
+```
diff --git a/docs/commands/window.md b/docs/commands/window.md
new file mode 100644
index 0000000000..ffaaa6e788
--- /dev/null
+++ b/docs/commands/window.md
@@ -0,0 +1,28 @@
+---
+title: window
+layout: command
+version: 0.59.1
+---
+
+Creates a sliding window of `window_size` that slide by n rows/elements across input.
+
+## Signature
+
+```> window (window_size) --stride```
+
+## Parameters
+
+ -  `window_size`: the size of each window
+ -  `--stride {int}`: the number of rows to slide over between windows
+
+## Examples
+
+A sliding window of two elements
+```shell
+> echo [1 2 3 4] | window 2
+```
+
+A sliding window of two elements, with a stride of 3
+```shell
+> [1, 2, 3, 4, 5, 6, 7, 8] | window 2 --stride 3
+```