key/value wording. Gentoo#174319

git-svn-id: http://svn.repogirl.net/pms/trunk@157 a05a4626-2124-0410-b604-e6c5abf33261

1 files changed, 5 insertions, 2 deletions

diff --git a/profiles.tex b/profiles.tex
index 8081270..3861ccf 100644
--- a/profiles.tex
+++ b/profiles.tex
@@ -37,13 +37,16 @@ This file is unusual in that it is not combined at a file level with the parent-
 variable is combined or overridden individually as described in section \ref{profile-variables}.
 
 The file itself is a line-based key-value format. Each line contains a single \verb|VAR="value"|
-entry. Additional syntax, which is a small subset of bash syntax, is allowed as follows:
+entry, where the value must be double quoted. A variable name must start with one of \t{a-zA-Z}
+and may contain \t{a-zA-Z0-9\_\\-}. Additional syntax, which is a small subset of
+bash syntax, is allowed as follows:
 
 \begin{bulletlist}
-\item Variables inside double-quoted strings in the form \t{\$\{foo\}} or \t{\$foo} are recognised and
+\item Variables to the right of the equals sign in the form \t{\$\{foo\}} or \t{\$foo} are recognised and
   expanded from variables previously set in this or earlier \t{make.defaults} files.
 \item One logical line may be continued over multiple physical lines by escaping the newline with a
   backslash. This is also permitted inside quoted strings.
+\item Backslashes, except for line continuations, are not allowed.
 \end{bulletlist}
 
 \subsection{virtuals}