/usr/share/psychtoolbox-3/PsychInitialize/Contents.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
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1 2 3 4 5 | % Psychtoolbox:PsychInitialize
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% help Psychtoolbox % For an overview, triple-click me & hit enter.
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% PsychStartup - Perform Psychtoolbox related setup at Matlab/Octave startup.
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