The .figure command numbers the figures sequentially using the current chapter number followed by a dash and the sequence number within the chapter.
.figure text
.fig
text | Descriptive word or phrase to display next to the sequential number of the figure. |
The descriptive text and the sequential number are recorded in the table of contents under the figure headings.
If chapter numbers are suppressed, figures are numbered sequentially with a single number, that is, figure 1, figure 2, and so on.