Searching for Text in MS-DOS Help Use the Find command from the Search menu to search for a specific string of text in MS-DOS Help. The Find command is a full-text search--that is, it searches through all the topics in MS-DOS Help. In the Find command dialog box, specify the text you want to search for, and then choose OK. MS-DOS Help searches forward from the cursor for the first occurrence of the search text. When it finds an occurrence of the text, it displays the topic the text is contained in. To find the next occurrence of the search text in MS-DOS Help, press F3. Select Match Upper/Lowercase to make the search case-sensitive. Select Whole Word to find only whole-word occurrences of the search text.