- "GNU cppi indents C preprocessor directives to reflect their nesting and
-ensure that there is exactly one space character between each #if, #elif,
-#define directive and the following token. The number of spaces between the
-`#' and the following directive must correspond to the level of nesting of
-that directive.")
+ "GNU Cppi processes C source code files to properly indent the
+preprocessor directives to reflect their nesting. It also performs other
+standardizations, such as correcting the number of spaces between directives
+and the text following them.")