The window has two settings - either it can display the logical environments that make up
the text structure, or it can display the hierarchy of variable names. You can switch
between the two by clicking the appropriate radio button at the foot of the dialog.
Clicking on a variable will cause it to appear at the centre of the Network Display.
The window displays the structure of logical environments. The glyphs next to the variables indicate how variable creation within the environment is handled:
Global
- New variables are created at the outermost level of the model.
Local
- Variables are searched for out to the outermost level, and if not found, created at the local level.
Let Pass
- The environment does not attempt to control creation of variables.
Specify
- You need to specify a particular logical environment for new variables. The editor will use this when creating new variables.
Ask
- In the editor, you will be asked about the context for each new variable.
Selected
- The variable with this glyph is the one that is currently selected in the window.
The hierarchy of logical block variables is displayed, starting at the model variable. The glyph next to a variable indicates whether there are more block variables within its ambit, or it is a leaf of the hierarchy, without nested block variables.