Intro

'Intro' not found in section PTHREAD, but available here:

/usr/man2/html.C/Intro.C.html
/usr/man2/html.S/Intro.S.html
/usr/man2/html.CP/Intro.CP.html
/usr/man2/html.M/Intro.M.html
/usr/man2/html.F/Intro.F.html
/usr/man2/html.HW/Intro.HW.html
/usr/man2/cat.3/XML::SAX::Intro.3.Z
/usr/man2/html.ADM/Intro.ADM.html
/usr/man2/html.ADMN/Intro.ADMN.html
/usr/man2/html.ADMP/Intro.ADMP.html
/usr/man2/html.CDMT/Intro.CDMT.html
/usr/man2/html.FP/Intro.FP.html
/usr/man2/html.NADM/Intro.NADM.html
/usr/man2/html.NC/Intro.NC.html
/usr/man2/html.NET/Intro.NET.html
/usr/man2/html.NF/Intro.NF.html
/usr/man2/html.NS/Intro.NS.html
/usr/man2/html.SFF/Intro.SFF.html
/usr/man2/html.SLIB/Intro.SLIB.html
/usr/man2/html.SSC/Intro.SSC.html
/usr/man2/html.TC/Intro.TC.html
/usr/man2/html.XS/Intro.XS.html
/usr/man2/html.Xext/Intro.Xext.html
/usr/man2/html.Xm/Intro.Xm.html
/usr/man2/html.Xmu/Intro.Xmu.html
/usr/man2/html.Xt/Intro.Xt.html