Merge pull request #124 from stan-dev/bugfix/void-functions

Rephrase the void functions chapter

Author: mitzimorris

src/functions-reference/void_functions.Rmd

@@ -1,12 +1,8 @@
 # Void Functions
 
 Stan does not technically support functions that do not return values.
-It does support two types of statements that look like functions, one
-for printing and one for rejecting outputs.  Documentation on these
-functions is included here for completeness.  The special keyword
-`void` is used for the return type of void functions, because they
-behave like variadic functions with void return type, even though they
-are special kinds of statements.
+It does support two types of statements, one printing and one for rejecting
+outputs.
 
 Although `print` and `reject` appear to have the syntax of functions,
 they are actually special kinds of statements with slightly different
@@ -16,6 +12,10 @@ are the the only constructs to accept string literals (e.g., `"hello
 world"`) as arguments.  Third, they have no effect on the log density
 function and operate solely through side effects.
 
+The special keyword `void` is used for their return type because they behave
+like variadic functions with void return type, even though they are special
+kinds of statements.
+
 ```{r results='asis', echo=FALSE}
 if (knitr::is_html_output()) {
 cat(' * <a href="print-statement.html">Print Statement</a>\n')
@@ -37,7 +37,7 @@ or the R console in RStan).
 `void` **`print`**`(T1 x1,..., TN xN)`<br>\newline
 Print the values denoted by the arguments x1 through xN on the output
 message stream. There are no spaces between items in the print, but a
-line feed (LF; Unicode U+000A; C++ literal `'\{n}'`) is inserted at
+line feed (LF; Unicode U+000A; C++ literal `'\n'`) is inserted at
 the end of the printed line. The types `T1` through `TN` can be any of
 Stan's built-in numerical types or double quoted strings of ASCII
 characters.
@@ -58,7 +58,7 @@ context in which it occurs).
 Reject the current iteration and print the values denoted by the
 arguments x1 through xN on the output message stream. There are no
 spaces between items in the print, but a line feed (LF; Unicode
-U+000A; C++ literal `'\{n}'`) is inserted at the end of the printed
+U+000A; C++ literal `'\n'`) is inserted at the end of the printed
 line. The types `T1` through `TN` can be any of Stan's built-in
 numerical types or double quoted strings of ASCII characters.