You can fit content by adjusting formatting, e.g. decreasing or increasing type size and/or leading, horizontal and/or vertical scale and other formatting properties, on the highlighted text or on the current or more selected paragraphs.

The details are described in Adjust formatting by keyboard, step-by-step.

About multi-paragraph headlines

To apply the fitting on a multi paragraph headline, follow the procedure explained above, but repeat it for each paragraph in the headline. Please note that such approach may result in a headline whose paragraphs are not shrunk in the same amount.