5.10 Index entries

Although most information for the Index is gathered automatically, in some situations it must be done by hand.

5.10.1 ‘@_’: Force index entry to be underlined

This command applies to the next identifier that appears after the ‘@_’. The index entry for that identifier will be underlined. (By convention, this means ‘defined’ or ‘declared’.)

This command is usually issued automatically. For example, the index entries for the variables ‘i’ and ‘j’ in the C statement ‘int i, j;’ will be underlined, since FWEAVE understands enough of the syntax to know that variables are being defined. Macro definitions (begun by ‘@D’ or ‘@M’) will also be underlined automatically.