This manual page is not meant to be exhaustive. The complete documentation for this version of TEX can be found in the info file or manual Web2C: A TeX implementation.
Strip btex..etex and verbatimtex...etex parts from !MetaPost? input file mpfile, converting to either TEX or Troff (TEX by default). The generated code is dumped on standard output.
mpto accepts the following options:
Print help message and exit.
Assume input file contains TEX commands.
Assume input file contains Troff commands.