# Cursor Horizontal Tabulation (CHT)

> Move the cursor forward n tab stops.

- **Sequence:** `CSI Pn I`
- **Defaults:** Pn = 1
- **ECMA-48:** [§8.3.10 CHT – Cursor Forward Tabulation, p. 34](https://archive.org/details/ecma-48-5th-edition-june-1991/page/n47/mode/1up)
- **VT510:** [CHT—Cursor Horizontal Forward Tabulation](https://vt100.net/docs/vt510-rm/CHT.html)

Do what a [horizontal tab](https://control-codes.page/c0/ht/index.html.md) does, `Pn` times: move the cursor right
to the next tab stop, stopping at the right margin if there are no more. A
`0` is taken as `1`. [CBT](https://control-codes.page/csi/cbt/index.html.md) goes the other way.

## Validation

### CHT-1: One tab stop

Input, one step per line:

```text
\e[?5W    # reset tab stops
\e[I
X
```

Expected screen:

```text
|________X___________|
```

### CHT-2: Several tab stops

Input, one step per line:

```text
\e[?5W    # reset tab stops
\e[2I
X
```

Expected screen:

```text
|________________X___|
```

### CHT-3: Stops at the right margin

Input, one step per line:

```text
\e[?5W    # reset tab stops
\e[9I
X
```

Expected screen:

```text
|___________________X|
```

---

This is the Markdown version of <https://control-codes.page/csi/cht/>. On that page every validation case runs live in libghostty-vt, the terminal emulation core of Ghostty, compiled to WebAssembly.

The validation cases are written in the notation described in <https://control-codes.page/notation/index.html.md>.