Since PBMake uses your .MAK script to create a batch file that
      does the actual work, there is  NO memory overhead  during the
      compiling and linking process.

      Also, other MAKE processes stay resident and shell to DOS each
      time a source module is compiled, or a linker is run. This memory
      swapping adds a lot of time to the process, so if you currently
      use another MAKE engine and you use it in the simple form, you
      will see some speed savings by switching to PBMake.