JHELP is the jCommon module of jLab.

 JHELP  Opens linked JLAB help files in Matlab's internal web browser.
 
    JHELP with no input arguments opens the JLAB Contents.m file.
    JHELP FILE opens the help information for JLAB function FILE.
    
    Usage: jhelp
           jhelp polysmooth
    __________________________________________________________________
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2014--2015 J.M. Lilly --- type 'help jlab_license' for details

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