If you're longing for an old-fangled yellow highlighter marker option that lets you place emphasis on text in an InDesign document, the software has a feature and style to help you achieve this look. Highlighting text comes in handy if you want to underscore a word, line or paragraph in your document. This technique simulates the look of a transparent line of color on top of the type.
Open an InDesign document that contains text with you want to work. Click the "Selection" tool in the Toolbar. Click on the text box, then triple-click on the line or lines of specific text you want to emphasize with the highlighter effect.
Select "Window," then scroll down to "Control" to bring up the Control Panel. Press "ALT+Click" on the "Underline" button. The "Underline Options" dialog box will open.
Check the box next to "Underline On," then select a text weight, offset value and color for your highlight. Click the drill-down dialog box next to "Tint" to select the transparency value. Click "OK."
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