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Tap the text and choose Select or Select All to select a single word or all the words in the e-mail. Note that if you select a single word, handles appear that you can drag to add adjacent words to your selection. 
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Tap the arrow at the far end of the toolbar that appears. 
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To apply bold, italic, or underline formatting, tap the BIU button.  
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In the toolbar that appears, tap Bold, Italics, or Underline to apply formatting.  
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To change the indent level, tap at the beginning of a line and then tap the arrow at the far end of the toolbar. In the toolbar that appears. tap Quote Level. 
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Tap Increase to indent the text or Decrease to move indented text farther toward the left margin. 
To change the minimum size of text in e-mails, use the iPhone Settings. Tap Mail, Contacts, Calendars, and then tap the Minimum Font Size setting. Choose from Small, Medium, Large, Extra Large, and Giant in the list that appears.



