Abstract
The consensus in the programming community is that indentation
aids program comprehension, although many studies do not back this up. We
tested program comprehension on a Pascal program. Two styles of indentation
were used-blocked and nonblocked- in addition to four possible levels of
indentation (0, 2, 4, 6 spaces). Both experienced and novice subjects were
used. Although blocking style made no difference, the level of indentation
had a significant effect on program comprehension. (2-4 spaces had the
highest mean score for program comprehension.) We recommend that a moderate
level of indentation be used to increase program comprehension and user
satisfaction.
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