#### 37.1.4 Using predefined macros

DITA2Go provides several predefined macros for HTML, listed in Table 37-1, and for RTF, listed in Table 37-2.

Predefined macro names are reserved

Avoid giving any of your own macros a name that starts with an underscore; the DITA2Go definition takes precedence. The “$” says “this is a DITA2Go construct”; the “_” says “the name is reserved, not one of yours”.

Table 37-1 Predefined macros for HTML output

Macro | Description | Ref.
    <$_TopicStartCode>
| Macros from marker type TopicStartCode | 38.2
    <$_trail>
| Inserts a “breadcrumb trail” of links | 29.2

The predefined macros for RTF output, listed in Table 37-2, are intended for use in defining RTF output formats; see §7.4.8 Assigning content-adding properties to formats.

Table 37-2 Predefined macros for RTF output

Macro | Description
    <$_style(stylename)>
| RTF start code for a paragraph or character format
    <$_colornum(colorref)>
| Color number, after \\cf or \\cb
    <$_fontnum(fontname)>
| Font number, after \\f
    <$_stylenum(stylename)>
| Style number; after \\s i
    <$_styleref(stylename)>
| STYLEREF field with the named style
    <$_pageref>
| PAGEREF field referencing last bookmark used

Previous Topic: 37.1.3 Nesting macros

Next Topic: 37.2 Accessing DITA2Go macro libraries

Parent Topic: 37.1 Defining and invoking macros

Sibling Topics:

37.1.1 Defining macros

37.1.2 Invoking a macro

37.1.3 Nesting macros

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