>Psychtoolbox>PsychDocumentation

If you are using a Psychtoolbox variant and version that requires a paid
software license key to function, e.g., on Microsoft Windows, or Apple
macOS, or for Matlab on Linux, then a few minutes of basic support per
year for basic questions may be included in the specific type of software
license you bought. If at all, when, and how much support will be
provided is at the sole discretion of the Psychtoolbox team. In any case,
if you wanted to ask for this basic support, you’d have to present an
authentication token by running this function, or by calling
PsychLicenseHandling(‘AuthenticationToken’).

For paid support beyond that, on the user forum or GitHub issue tracker,
you may have bought a “Psychtoolbox paid support membership” in the past.
If that membership is still valid, then the following procedure would
allow you to use it:

1. As part of your purchase, you will have received a document - an
   invoice - with a printed “Order Id” or “Order no.”, and a printed “License key”.

2. Next you can run *this* function PsychPaidSupportAndServices in Octave or
   Matlab. The function will ask you if you need paid support and do have
   an active license key to prove your paid membership. Answer “y” for yes.

3. Next the function will ask you about your “Order Id” and “License key”.
   Please enter that info that you got from step 1.

4. The function will print out an “authentication token”, a string of letters and
   numbers. Now you can post your question on the Psychtoolbox user forum at
   https://psychtoolbox.discourse.group or open a new issue for bugs and feature
   requests on our GitHub issue tracker at the following URL:
   https://github.com/Psychtoolbox-3/Psychtoolbox-3/issues

   Please add the “authentication token” to your forum question or GitHub issue.
   This will prove to us that you deserve paid support for your question or
   issue. Please note that initial activation of your license key may take 5-10
   days after date of receipt of payment, so do not buy the paid support last
   minute, when the “house is already burning”, but ahead of time, like you
   would do with a fire insurance.