If the table cells are still incorrect, it may be that the table’s visual formatting is preventing the table being correctly recognized.
Check the table structure by right-clicking on the table and opening the Table Editor, as in Step 5. Markup the table by dragging over it and clicking the ‘Table’ button in the ‘Touch Up Reading Order’ tool. Click the ‘Clear Page Structure’ button in the ‘Touch Up Reading Order’ tool. Partially visible pages will also be affected when you clear the existing page structure. Make sure that only a single page is visible in the document window. If there are still problems, try clearing the tag structure of the whole page. Hopefully, they have now been identified correctly, as below. Re-open the table editor to check the table cells. Click the ‘Table’ button in the ‘Touch Up Reading Order’ tool, to re-tag the table. Draw a rectangle over the table itself by dragging. If the cells are incorrect, click outside of the table to close the table editor. In the example below, the table cells outlined in red and labelled ‘TD’ do not match the actual cells in the table. This will open a view of the cells in the table. To check this, context-click on the table and select ‘Table Editor’. Although the table is now bounded correctly, the cells may not be identified accurately. Repeat for other items incorrectly included in the table. Click the ‘text’ button in the ‘Touch Up Reading order’ dialog. In the example below, the left column of text is highlighted. 
The characters within those items will be faintly highlighted in blue. To correct the tagging, start by drawing a rectangle over the wrongly labelled items by dragging with the mouse.In the example below, the text has been wrongly incorporated into the table. Check that the table is marked up with a box labelled ‘Table’, and the box correctly covers the table area. It is sometimes necessary to clear and rebuild a page’s tag structure so as to get the table tags correct. If there are tables in your paper, we recommend tackling these first. … and the document view will be annotated with numbered markup items, showing the reading order.
The ‘Touch Up Reading order’ dialog will open.The accessibility tools will open in a panel on the right.This is a supplement to the instructions for essential steps to an accessible ACM paper, and assumes the first 5 of those 6 steps have already been taken. This page gives step-by-step instructions for how to use the ‘Touch Up Reading Order’ tool in Adobe Acrobat Pro XI to make an ACM publication in PDF format more usable for people with disabilities.
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