# OpenTabletDriver usage notes

## Related documents

* [OpenTabletDriver - an introduction]()
* [Install OpenTabletDriver on Windows](opentabletdriver-windows) &#x20;
* [Install OpenTabletDriver on MacOS](install-opentabletdriver-on-macos)

## Use the OTD discord to get help

* If you need help, join the OpenTabletDriver Discord server: [https://discord.gg/9bcMaPkVAR](https://discord.gg/9bcMaPkVAR) &#x20;
* **DO** ask questions in the `#support-windows` channel
* **DO NOT** ask for support via DMs.

## Do not ask your tablet manufacturer for help with OTD

<mark style="color:red;">**Your tablet manufacturer WILL NOT help or support you in any way when you are using OpenTabletDriver instead of their own drivers.**</mark>&#x20;

## Limitations of OpenTabletDriver

* Features that a typical driver has, but OTD does not.&#x20;
  * OTD does NOT support touch input.
  * OTD does NOT support tablet rotary dials.
  * OTD does NOT support pen barrel rotation.
  * OTD does NOT support wireless or Bluetooth connections.
  * OTD does NOT support per-application configuration. All OTD settings are system-wide.
* Features that a typical driver has, and OTD does not have built-in, but for which you can use OTD plug-ins to achieve the same result.
  * OTD does not have a built in pressure curve, for that you should use an OTD plug-in like Slimy Scylla.   [**Pressure curves in OpenTabletDriver**](opentabletdriver-pressure)

## **OpenTabletDriver on Windows**

### **Running OTD as admin**

* <mark style="color:red;">**DO NOT run OTD as administrator**</mark>.&#x20;
* OTD will not work correctly if you do.

### **Windows Ink & WinTab**&#x20;

* There are two Pen APIs in the Windows ecosystem: **WinTab** which is older, and **Windows Ink** which is newer.
* OTD only supports **Windows Ink** so any apps you want to use it with must also support Windows Ink.
* Most creative apps support Windows Ink - Clip Studio Paint, Krita, Photoshop.
* If you want pressure sensitivity, tilt, etc. - you must **you MUST configure OTD to use Windows Ink** and configure your apps to also use Windows Ink.&#x20;

### Application data directory

* OTD stores information in its application data directory
* More here: [OpenTabletDriver application data directory](opentabletdriver-application-data-directory)
* If you are doing more advanced things with OTD you should be familiar with this folder.

## Pen hover height

By default, OTD **has no restriction on the hover height of your pen**. Most drivers impose an artificial limit of about 10mm for a pen. But you'll often find with OTD that the hover height is increased substantially.&#x20;

The maximum hover height is dependent on the specific model of tablet involved. For example with a Wacom Intuos Pro (PTH-860) my hover height goes from 10mm with the Wacom Driver to 20mm with Open Tablet driver.

You can install a plug-in to control the hover height and have whatever limit you want.

###
