The Jargon File (version 4.4.7, 29 Dec 2003):

studlycaps
 /stuhd'lee?kaps/, n.

    A hackish form of silliness similar to BiCapitalization for trademarks,
    but applied randomly and to arbitrary text rather than to trademarks. ThE
    oRigiN and SigNificaNce of thIs pRacTicE iS oBscuRe.


The Free On-line Dictionary of Computing (30 December 2018):

studlycaps

    /stuhd'lee-kaps/ A hackish form of silliness similar
   to BiCapitalisation for trademarks, but applied randomly and
   to arbitrary text rather than to trademarks.  ThE oRigiN and
   SigNificaNce of thIs pRacTicE iS oBscuRe.

   (1995-03-01)