Here is a summary of the glyph commands:
@result{} indicates the result of an expression.
@expansion{} indicates the results of a macro expansion.
@print{} indicates printed output.
@error{} indicates the following text is an error message.
@equiv{} indicates the exact equivalence of two forms.
@point{} shows the location of point.
@clicksequence{A @click{} B} indicates a GUI operation
sequence: first A, then clicking B, or choosing B from a menu, or
otherwise selecting it.