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      SECTION 5.1                                             Organization and Use of Fonts



      (Tm ) in the text object, several text state parameters, and the current transforma-
      tion matrix (CTM) in the graphics state; see Section 5.3.3, “Text Space Details.” If
      the text space is later scaled to make the unit size 1 centimeter, painting glyphs from
      the same 12-unit font generates results that are 12 centimeters high.

5.1.2 Achieving Special Graphical Effects

      Normal uses of Tj and other glyph-painting operators cause black-filled glyphs to
      be painted. Other effects can be obtained by combining font operators with gen-
      eral graphics operators.

      The color used for painting glyphs is the current color in the graphics state: either
      the nonstroking color or the stroking color (or both), depending on the text ren-
      dering mode (see Section 5.2.5, “Text Rendering Mode”). The default color is
      black, but other colors can be obtained by executing an appropriate color-setting
      operator or operators (see Section 4.5.7, “Color Operators”) before painting the
      glyphs. Example 5.3 uses text rendering mode 0 and the g operator to fill glyphs
      in 50 percent gray, as shown in Figure 5.1.

      Example 5.3

         BT
              /F13 48 Tf
              20 40 Td
              0 Tr
              0.5 g
              ( ABC ) Tj
         ET




                                   ABC
                              FIGURE 5.1 Glyphs painted in 50% gray

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