




Command:   m4 - macro processor
Syntax:    m4 [-D name = value] [-U name]
Flags:     -D  Define a symbol
           -U  Undefine a symbol
Example:   m4 <m4test               # Run M4

     M4 is a general-purpose macro processor.  It is described in  Chap.
9.  It has been used to implement programming languages, such as RATFOR.


















































                                                                        

