Listed all the environment variables (MACHINE and PWD were missing). Documented PWD.  MACHINE and MAKEOBJDIR are are still undocumented except in main.c.  I will be changing MAKEOBJDIR back to its old behaviour so that the comment in main.c actually applies.
Listed all the environment variables (MACHINE and PWD were missing).
Documented PWD.  MACHINE and MAKEOBJDIR are are still undocumented
except in main.c.  I will be changing MAKEOBJDIR back to its old
behaviour so that the comment in main.c actually applies.

Removed irrelevant misformatted text about make's name being argv[0].

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase