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This chapter describes various builtin macros for controlling the input
to m4.
| • Dnl: | Deleting whitespace in input | |
| • Changequote: | Changing the quote characters | |
| • Changecom: | Changing the comment delimiters | |
| • Changeword: | Changing the lexical structure of words | |
| • M4wrap: | Saving text until end of input |