Final answer:
You can edit a markup by using the right-click menu, deleting and re-adding it, using undo (Ctrl+Z), or through specific Markup Properties and reviewing features in the word processing software.
Step-by-step explanation:
Once you've added a markup to a document, such as in a word processing software like Microsoft Word, you have several options to edit it. You can utilize the reviewing features within the application to manage these markups. For instance, right-clicking on the markup provides a contextual menu that may offer editing options. You can also delete the markup and re-add it if necessary. Using Ctrl+Z (Undo) can also revert the last action if your intent is to modify something you just did.
However most word processors have specific Markup Properties or reviewing features like the Review tab with options to accept or reject changes, or to toggle Track Changes off to avoid registering new edits as markups. These tools are particularly useful for managing revisions and edits collaboratively.