vxrefbas: WIP.

1 files changed, 26 insertions, 11 deletions

diff --git a/vxrefbas.rst b/vxrefbas.rst
index b06deb5..155cd80 100644
--- a/vxrefbas.rst
+++ b/vxrefbas.rst
@@ -15,24 +15,39 @@ vxrefbas **input-file**
 
 DESCRIPTION
 ===========
-**vxrefbas** reads an Atari 8-bit BASIC tokenized program and prints
-a list of variables, each with a list of line numbers where the
-variable is referenced.
 
+**vxrefbas** reads an Atari 8-bit BASIC tokenized program and prints a
+list of variables (names and token numbers), each with a list of line
+numbers where the variable is referenced.
+
+String variable names end with *$*. Arrays end with *(*. Numeric
+(scalar) variable names don't have a special character.
+
+After the list of lines, the reference count is shown in parentheses.
 Variables that aren't used by the program are listed as *(no references)*.
 
-Each line number may be followed by one or more markers, which show the
-type of variable access.
+Each line number may be followed by an *=* and one or more markers,
+which show the type of variable access.
 
-**=**
-  The variable is assigned on this line, with *LET* or "implied LET" (e.g.
+**A**
+  Variable is assigned on this line, with *LET* or "implied LET" (e.g.
   *A=1*).
 
-**{**
-  The variable is used as the control variable of a *FOR* loop on this line.
+**F**
+  Variable is used as the control variable of a *FOR* loop on this line.
+
+**N**
+  Variable is used in a *NEXT* on this line.
+
+**D**
+  The variable is dimensioned (*DIM* command) on this line. Only applies to
+  string and array variables.
+
+**I**
+  Variable was *INPUT* on this line.
 
-**}**
-  The variable is used in a *NEXT* on this line.
+**R**
+  Variable was *READ* on this line.
 
 OPTIONS
 =======