- Lab 3 (Solution):
  - You should have done this:
    1. The NeXtMidas shell comes with a few tables pre-defined (`AUX`, `OPT`, `REG`, `RAM`, and `ENV`). What is the value of `USER` in the `ENV` table?

           nM> get env.user
            7S: ENV.USER        = student

    2. The registry table (`REG`) has a table of handlers. The table of handlers has multiple tables in it, one of which is called `FILE`. In that `FILE` table, what is the value of `JPEG`?

           nM> get reg.handlers.file.jpeg
            21S: REG.HANDLERS.FILE.JPEG = nxm.sys.lib.ImageFile

    3. Set a result named `FILE_TYPE` to `PRM`.

           nM> set FILE_TYPE PRM

    4. Use `SAY` to print out the value in the `FILE` table that corresponds with `FILE_TYPE`.

           nM> say "^{reg.handlers.file.^{FILE_TYPE}}"
           nxm.sys.lib.DataFile

    5. Create an empty table called `PEOPLE`. Add two sub tables to it, the first named `JOHN` set to `{AGE=32,HEIGHT={FEET=5,INCHES=9}}` and the second named `LINDA` set to `{AGE=30,HEIGHT={FEET=5,INCHES=2}}`.

           nM> set people {}
           nM> set people.john {AGE=32,HEIGHT={FEET=5,INCHES=9}}
           nM> set people.linda {AGE=30,HEIGHT={FEET=5,INCHES=2}}

    6. Use `CALCULATOR` to compute John's total height in inches. Store that value in a result named `HEIGHT`.

           nM> calc height people.john.height.feet 12 * people.john.height.inches +
           Calc: HEIGHT = 69.0

    7. Compute John's total height again in inches, but this time store it back into the people table under John's entry and call it `HEIGHT` replacing the previous height in a table with a total height in inches. Then do the same for Linda.

           nM> calc people.john.height people.john.height.feet 12 * &
                                       people.john.height.inches +
           Calc: PEOPLE.JOHN.HEIGHT = 69.0
           nM> calc people.linda.height people.linda.height.feet 12 * &
                                        people.linda.height.inches +
           Calc: PEOPLE.LINDA.HEIGHT = 62.0

    8. Use `INFO` to print out John's and Linda's heights in inches. When it prints it should look like "`John is 69.0in tall`".

           nM> info "John is ^{people.john.height}in tall"
           INFO: John is 69.0in tall
           nM> info "Linda is ^{people.linda.height}in tall"
           INFO: Linda is 62.0in tall