2018-02-19 19:05:00

2 files changed, 18 insertions, 0 deletions

diff --git a/doc/context/sources/general/manuals/luatex/luatex-fonts.tex b/doc/context/sources/general/manuals/luatex/luatex-fonts.tex
index ea176d197..ddb64d946 100644
--- a/doc/context/sources/general/manuals/luatex/luatex-fonts.tex
+++ b/doc/context/sources/general/manuals/luatex/luatex-fonts.tex
@@ -608,6 +608,18 @@ Finally, here is a plain \TEX\ input file with a virtual font demonstration:
 
 \typebuffer
 
+\section{The \type {vf} library}
+
+The \type {vf} library can be used when \LUA\ code, as defined in the \type
+{commands} of the font, is executed. The functions provided are similar as the
+commands: \type {char}, \type {down}, \type {fontid}, \type {image}, \type
+{node}, \type {nop}, \type {pop}, \type {push}, \type {right}, \type {rule},
+\type {special} and \type {pdf}. This library has been present for a while but
+not been advertised and tested much, if only because it's easy to define an
+invalid font (or mess up the \PDF\ stream). Keep in mind that the \LUA\ snippets
+are executed each time when a character is output.
+
+
 \section{The \type {font} library}
 
 The font library provides the interface into the internals of the font system,
diff --git a/doc/context/sources/general/manuals/luatex/luatex-nodes.tex b/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
index ee60f6451..f4fd87119 100644
--- a/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
+++ b/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
@@ -35,6 +35,12 @@ You can ask for a list of fields with the \type {node.fields} (which takes an id
 and for valid subtypes with \type {node.subtypes} (which takes a string because
 eventually we might support more used enumerations).
 
+The \type {node.values} function reports some used values. Valid arguments are
+\type {dir}, \type {direction}, \type {glue}, \type {pdf_literal}, \type
+{pdf_action}, \type {pdf_window} and \type {color_stack}. Keep in mind that the
+setters normally expect a number, but this helper gives you a list of what
+numbers matter.
+
 \subsection{Attributes}
 
 The newly introduced attribute registers are non|-|trivial, because the value