This Wiki page is edited by participants of the WCAG Working Group. It does not necessarily represent consensus and it may have incorrect information or information that is not supported by other Working Group participants, WAI, or W3C. It may also have some very useful information.
From WCAG WG
Failure Example 3:
The page uses frame but scrolling is set to "no". When the page size is increased using zoom, the content is hidden.
<FRAMESET ROWS="30%,*"> <FRAME SRC="frameScrollingNo.html" scrolling=”no”> <FRAME SRC="main.html" > </FRAMESET>
Illustration of example 3: The section where scrolling is set to no gets truncated when the screen size is increased using browser zoom function.