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Organization and structure for diagrams
Just like graphs and charts, there are four paragraphs describing diagrams:
1) Introduction
In this paragraph, the task should be introduced while the given topic is
paraphrased. The best verbs to introduce diagrams are: “
illustrate
,”
“
represent
,” and “
show
.” For flowcharts, which come without pictures, verbs
such as “
describe
” or “
show
” are typically used. This selection has to do with
the connotation of these words. For example, the verb “illustrate” should not
introduce a line graph, a table, or a flowchart, where there are no pictures.
2) Overview
This paragraph focuses on 
the first 
and last steps
of a diagram/flowchart and
the 
number of steps 
included. If there are too many steps or it is hard to know
the exact number of steps precisely, it is better to skip it and mention the
number of steps in a more general way. For instance, “
in a few steps
” could
substitute “in 8 steps”. There are no major features in these writings as all the
steps are equally important; this is one main difference between process
diagrams/flowcharts and graphs/charts.