XEmacs Reference Manual - Indentation Go to the previous , next section. This would cancel out the effect of LFD .
Most programming languages have some indentation convention.
For Lisp code, lines are indented according to their nesting in parentheses. The same general idea is used for C code, though details differ. Use the TAB command to indent a line whatever the language. Each major mode defines this command to perform indentation appropriate for the particular language. In Lisp mode, TAB aligns a line according to its depth in parentheses.