You need to set the justification defaults of a format during creation of a format (recommended) or any time later.

Note: if you are already editing a format, then start with the step #3.

To set justification defaults of a format

1.Edit a format as explained in Edit formats in EdAdmin4.

2.Select and then edit a format and then click Global.

3.In Line spacing, select what you want, between "tight", "loose", "optimal" and "compatibility". See About line spacing options for details.

4.Select Use letter spacing, to allow the spacing to be added between letters in justified lines that are too short to be justified otherwise, or clear it, to allow spacing being added only between words in justified lines that are too short to be justified otherwise. See About letter spacing option for details.

5.In Automatically disable small capitals (or all lowercase/uppercase) on font or point size change, select it, to automatically clear typographical changes related to the >small...< tag, when selecting different font or changing point size. Clear it, to keep typographical changes related to the >small...< tag, when selecting different font or changing point size (recommended).

6.In Consider as non-empty lines containing only character markup commands (font change, color change), select it, to allow for example, tag >co< to create an empty line in text. Deselect it, to prevent such effect.

7.In Overfull lines handling, select the most appropriate handler for the overfull lines. See About overfull lines handling for details.