> ## Documentation Index
> Fetch the complete documentation index at: https://docs.oryx.mechatronstudio.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Copy, paste and undo

> Reusing stretches of signal and stepping back without fear.

## Copy and paste

| Shortcut             | Action |
| -------------------- | ------ |
| `C` or `Ctrl+C`      | Copy   |
| `X` or `Ctrl+X`      | Cut    |
| `V`, `P` or `Ctrl+V` | Paste  |

### How pasting works

Pasting does not drop the contents where you were: it **enters paste mode** and
asks you to pick where it starts.

<Steps>
  <Step title="Copy a stretch">
    Select it and press `Ctrl+C`.
  </Step>

  <Step title="Press Paste">
    The header tells you: *"Pick the pulse where the paste starts · Esc to
    cancel"*. In analog it asks for a divider instead of a pulse.
  </Step>

  <Step title="Choose how many times">
    Before dropping the contents it asks how many repetitions you want, and
    whether you want the count marked over the signal.
  </Step>

  <Step title="Click where it goes">
    That is where it lands. `Esc` cancels at any time.
  </Step>
</Steps>

### What gets copied

<Tabs>
  <Tab title="Digital">
    The values of the selected stretch. If a **folded template** fell inside, it
    travels whole and stays a template when pasted.
  </Tab>

  <Tab title="Analog">
    The chosen points **along with the chords that join them**, with all their
    deformation: handle, height and radii.
  </Tab>
</Tabs>

### Between tabs

You can copy in one project and paste into another you have open in **another
tab of the same browser**. The *Paste* button in the other tab enables itself,
without reloading.

<Note>
  It does not work between different browsers, or between a normal window and a
  private one.

  The modes do not cross either: what you copied in digital does not go into an
  analog project.
</Note>

## Undo and redo

| Shortcut                   | Action |
| -------------------------- | ------ |
| `Ctrl+Z`                   | Undo   |
| `Ctrl+Y` or `Ctrl+Shift+Z` | Redo   |

Every history step stores **the whole project**: signal, steps, channels, analog
points and templates. Undo gives you all of it back together.

<Warning>
  After undoing, making a new change **loses what you had undone**. It is how any
  editor behaves, but it is worth keeping in mind.

  And remember that **each mode has its own history**: undoing in digital does not
  step back anything you did in analog.
</Warning>

The buttons are disabled in **view mode**, along with the rest of editing.

## Starting over

* **Reset** in the header clears every signal.
* `Shift + Backspace` does the same from the keyboard.