TEI provides the element which 'indicates a point where material has been omitted in a transcription, whether for editorial reasons described in the TEI header, as part of sampling practice, or because the material is illegible, invisible, or inaudible".
For blank pages or membranes, we can use the element with a @Reason attribute.
In a PDF, we could display like this:

TEI provides the element which 'indicates a point where material has been omitted in a transcription, whether for editorial reasons described in the TEI header, as part of sampling practice, or because the material is illegible, invisible, or inaudible".
For blank pages or membranes, we can use the element with a @Reason attribute.
In a PDF, we could display like this: