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Indentation Style: Notable Styles
computer programming, indentation style is a convention, a.k.a. style, governing the indentation of blocks of source code.
Although not required by languages such as C/C++, using braces for single-statement blocks ensures that inserting a statement does not result in control flow that disagrees with indenting, as seen for example in Apple's infamous goto fail bug. This is also because, braces aside, Lisp is conventionally a very terse language, omitting even common forms of simple boilerplate code as uninformative, such as the else keyword in an if : then | else block, instead rendering it uniformly as(if expr1 expr2 expr3). Typically, a programmer uses a text editor that provides tab stops at fixed intervals (a number of spaces), to assist in maintaining whitespace according to a style.
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