ETEC is still a work in progress. The following 2 documents are providing the need-to-know essentials:
Subject: ETEC Concept Notes File type: PDF File size: 25 MB Click/tap: Download PDF
Subject: Plant-Oil Cooker Presentation 2011 File type: PDF File size: <1 MB Click/tap: Download PDF
The Concept Notes are featuring vector graphics and document cross-links: Thus, test the link at the bottom of page 1 …” skip ahead to page 85, “… – whether it redirects to this page indeed!
Unfortunately, PDF-viewer like Acrobat Reader or Google’s “Drive PDF Viewer” or even Apple’s Preview are not state of the art.
In any case it is highly recommended to first download the file(s).