This article caught my eye History of computing hardware (1960s-present)  BOUNDED.  Further, in getting Punched Card and Keypunch to their current state, I had moved everything about them out of Unit Record Equipement - my style is to get it said once, and correct.  That left holes in unit record, comments made about it not being an outline, etc., that you & others had to fill in given the current document structure.  But those fill-ins don't add any knowldege about the topics.  How's this for a plan: do sorters, tabulators, reproduce & summary punch, collators, statistical, ... one article each (like Columbia Univ Computing History).  These articles are like the keypunch article, complete including all models, refrence manuals, everything.  For example, the current 513, 514, 519 articles get combined into reproduce & summary punch, only redirects left in their place.  Now there is no machine detail left for the unit record equipement article.  Change (move) it to Unit Record Data Processing, 1890-1949.  So the machines are bounded by article titles and the Unit Record ... article text is about the choreographed flow, bounded by dates.     