that would reverse a string for you. Instead of deleting your pipe, you can
activate the help menu with `F1`. Once active just type keywords for the
command you are looking for and the menu will show you commands that match your
input. The matching is done on the name of the commands or the commands
description.
To navigate the menu you can select the next element by using `tab`, you can
scroll the description by pressing left or right and you can even paste into
the line the available command examples.
The help menu can be configured by modifying the next parameters
```nu
$env.config = {
...
menus = [
...
{
name: help_menu
only_buffer_difference: true # Search is done on the text written after activating the menu
marker: "? " # Indicator that appears with the menu is active
type: {
layout: description # Type of menu
columns: 4 # Number of columns where the options are displayed
col_width: 20 # Optional value. If missing all the screen width is used to calculate column width
col_padding: 2 # Padding between columns
selection_rows: 4 # Number of rows allowed to display found options
description_rows: 10 # Number of rows allowed to display command description
}
style: {
text: green # Text style
selected_text: green_reverse # Text style for selected option
description_text: yellow # Text style for description
}
}
...
]
...
```
### Completion Menu
The completion menu is a context sensitive menu that will present suggestions
based on the status of the prompt. These suggestions can range from path
suggestions to command alternatives. While writing a command, you can activate
the menu to see available flags for an internal command. Also, if you have
defined your custom completions for external commands, these will appear in the
menu as well.
The completion menu by default is accessed by pressing `tab` and it can be configured by
modifying these values from the config object:
```nu
$env.config = {
...
menus: [
...
{
name: completion_menu
only_buffer_difference: false # Search is done on the text written after activating the menu
marker: "| " # Indicator that appears with the menu is active
type: {
layout: columnar # Type of menu
columns: 4 # Number of columns where the options are displayed
col_width: 20 # Optional value. If missing all the screen width is used to calculate column width
col_padding: 2 # Padding between columns
}
style: {
text: green # Text style
selected_text: green_reverse # Text style for selected option
description_text: yellow # Text style for description
}
}
...
]
...
```
By modifying these parameters you can customize the layout of your menu to your
liking.
### History Menu
The history menu is a handy way to access the editor history. When activating
the menu (default `Ctrl+r`) the command history is presented in reverse
chronological order, making it extremely easy to select a previous command.
The history menu can be configured by modifying these values from the config object:
```nu
$env.config = {
...
menus = [
...
{
name: history_menu
only_buffer_difference: true # Search is done on the text written after activating the menu
marker: "? " # Indicator that appears with the menu is active
type: {
layout: list # Type of menu
page_size: 10 # Number of entries that will presented when activating the menu
}
style: {