Overview
When selecting content in the tags or in the physical view, each individual box highlighted in the physical view is one text run. While text runs never need to be merged, sometimes they may need to be split so that text or content can be manipulated and read correctly. Keeping in mind that it is not possible to select only part of a text run when highlighting content in the physical view, if it cannot be selected in the tags, it may be that only a portion of a text run is being highlighted.
Prerequisites
Here is a list of some of the reasons you might need to split text runs:
- To isolate symbols, abbreviations, etc., to provide alternative (or expansion) text.
- If content in one text run belongs to adjacent cells in a table.
- To isolate a word or phrase in order to change its language.
Screenshots
The highlighted text below is one complete box - displaying a "text run."

Steps to Follow
- Find the text run in the Tags tree. Tip: When highlighting in the physical view, once the tag or text element has been located, remember to open the text element to find the specific text run.
- With the text run selected, Right-click on it (or otherwise open its context menu) and choose “Split text” (or use the keyboard shortcut Ctrl+Shift+X).

- Place the cursor where the split should occur.
- Press the Space Bar.
Common Problems
See frequently asked questions
Frequently Asked Questions
Why can’t I split a text run in CommonLook PDF?

Sometimes you may find, in CommonLook PDF, that you're unable to split a text run. The option for “split text” in the content menu will appear greyed out and is unable to be selected, as in the screenshot above.
How can I solve this issue?
There are a couple of solutions for this issue. One is to use a different font, in the source file, so that ligatures aren't an issue. Another option could be to try generating your PDF, from the source, using a different export method (this can vary, depending on what the "source" is).
A third option could be to use the Reading Order tool in Acrobat. (It used to be called the "Touch Up Reading Order" tool.)
- Open the Accessibility menu within Acrobat.
- Select the Reading Order tool.
- With the Reading Order tool dialog box, select the content you want to split.
- Then choose the type of tag you want to place it in. (If the tag you want isn't an option in Acrobat, you could just put it in a paragraph tag, seeing as you're about to finish remediating the document, fixing the tags, anyway.)
- Save the document and re-open CommonLook PDF.
Related Articles
What are Span Tags? (Desktop and Advanced Editor)
How to Change Languages (Desktop and Advanced Editor)
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