The Solaris environment automatically replaces some outline fonts with bitmap fonts when the size is appropriate. This improves performance, and in some cases improves the aesthetics and readability of the text. There may be several sizes at which replacement occurs for a given outline font.
Currently in DPS, the .pcf bitmap format is substituted for F3 outline fonts, Type1 and TrueType fonts. Substitution occurs when there is no rotation, the requested pixel size is within one half of a pixel of the .pcf font size, and the .pcf font is a resource in a .upr (PostScript resource) file. The .pcf format can be substituted for all scalable versions of the fonts mentioned above.