amounts of memory for text display, which might cause performance problems for some systems. Applying paragraph formatting In Canvas, you can control paragraph attributes, such as justification and leading. Paragraph attributes affect entire paragraphs, even if you select a single character, or place the insertion point anywhere in the paragraph. If you select text in multiple paragraphs, all the para- graphs will be affected. Paragraph-level formatting includes the following: •   leading and paragraph spacing •   indents •   tabs •   alignment (justification) •   automatic letter and word spacing •   hyphenation •   widow and orphan controls Setting line and paragraph spacing Using the Text menu, Text Ruler, or Type palette, you can adjust the spacing, or leading, between lines of text. You can also insert extra space before and after paragraphs using the Type palette. Canvas provides two methods of specifying leading: ratio (or per- centage) and point size. •   Ratio and percentage leading are based on the normal lead- ing of the largest type size in the preceding line. The normal leading is usually designed to be slightly larger than the point size of the type. For example, a single line of 12-point text usually occupies about 15 points of vertical space when you specify 100 percent or Single Space leading. Therefore, double spaced, or 200 percent, leading for 12-point text increases the line spacing to about 30 points. •   Leading specified in points is independent of the type size and normal leading of the typeface. The space from baseline to baseline is exactly the number of points specified, regard- less of the size of the type. Using point size leading lets you maintain consistent line spacing, and fit text to specific space requirements. For example, you have 10 lines of text,
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