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# TUTORIALS ON VIEWING AND STATES

Tutorials with illustrations are provided to give the MGED user a step-by-step walk-through of the basic capabilities of the graphics editor. Standard UNIX login and logout procedures appropriate to each site should be followed prior to beginning and after ending the tutorials.

Each of the tutorials will use the solids contained the MGED database called ``prim.g''. These can be obtained by making a copy of ``db/prim.g'' from the BRL CAD Package distribution tree. It is important to make a copy of the database and work with that, rather than using the supplied one. Changes made during the editing process are written to the database when they are accepted.

The first tutorial shows a sample invocation dialogue. All other tutorials start at the first MGED prompt (`mged>` ). If the user wishes to continue from one tutorial to the next without leaving MGED, issue the press reject and press reset commands before starting a new tutorial. User input will be shown in an emphasized font, and MGED output will appear in a `typewriter` font. If the user input is shown on the same line as a prompt, the input is literal. If the user input is shown on a line by itself, it is a directive, and is entered in an appropriate fashion.

The tutorials are self-contained, and if the user wishes to proceed to the next tutorial without exiting MGED, the RESET button should be pressed to return to the top view, where the model XYZ axes map to the screen XYZ axes.

The standard recovery procedure when in the middle of an editing operation is to select REJECT edit. Control is returned to the viewing state, and the user can restart with the last edit (e) command used in the tutorial.

- States Within the Edit Process
- Viewing State
- Solid Pick State
- Solid Edit State
- Object Pick State
- Object Path State
- Object Edit State
- Editing in the Plane of the Screen
  - Top View
  - Bottom View
  - Right View
  - Front View
  - 35, 25 View