diff --git a/README.md b/README.md
index 3c933a6..a229fc2 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ There are two ways to use PLL:
 ```
 
 ```
-Scheme     version      R7RS module        Note
+Scheme      version	R7RS module	Note
 -----------------------------------------------
 Chicken     4.*		Y
 Gauche      0.9.4	Y
@@ -81,20 +81,26 @@ Chibi       0.7.2	Y
 Husk        3.19.1	-
 SISC        1.16.6	-
 Saggitarius 0.7.1	Y
-Gambit      4.7     	-                  Needs -:s flag for syntax rules, and SRFI-1
-MIT Scheme  9.1.1       -
+Gambit      4.7		-		Needs -:s flag for syntax rules, and SRFI-1
+MIT Scheme  9.1.1	-
 STklos      1.10	-
+Scheme48		-		Needs ,open srfi-1
 ```
 
 Currently not supported:
 
 ```
+Bigloo     (prolog+cut eats up 100% CPU; needs investigation)
 SigScheme  (syntax-rules is disabled in sigscheme for now)
 TinyScheme (syntax-rules not implemented)
 Scheme9    (very strange behavior -- needs investigation)
 Kawa       (AMB doesn't work because of some different call/cc behavior)
 Foment     (the Hanoi towers example eats up 100% CPU and never finishes)
-SCM        (no support for cond-expand, but would probably work)
+SCM        (support for neither cond-expand nor syntax-rules)
 SIOD       (syntax-rules not implemented)
 ```
 
+## Documentation
+
+A very short manual is included (manual.md, manual.txt, manual.pdf).
+
diff --git a/README.txt b/README.txt
index e9bc6c1..733a994 100644
--- a/README.txt
+++ b/README.txt
@@ -70,7 +70,7 @@ There are two ways to use PLL:
     (import (pll))                 ;; only on the systems marked as having 
                                    ;; support for R7RS modules
 
-    Scheme     version      R7RS module        Note
+    Scheme      version R7RS module Note
     -----------------------------------------------
     Chicken     4.*     Y
     Gauche      0.9.4   Y
@@ -79,9 +79,10 @@ There are two ways to use PLL:
     Husk        3.19.1  -
     SISC        1.16.6  -
     Saggitarius 0.7.1   Y
-    Gambit      4.7         -                  Needs -:s flag for syntax rules, and SRFI-1
-    MIT Scheme  9.1.1       -
+    Gambit      4.7     -       Needs -:s flag for syntax rules, and SRFI-1
+    MIT Scheme  9.1.1   -
     STklos      1.10    -
+    Scheme48        -       Needs ,open srfi-1
 
 Currently not supported:
 
@@ -90,5 +91,10 @@ Currently not supported:
     Scheme9    (very strange behavior -- needs investigation)
     Kawa       (AMB doesn't work because of some different call/cc behavior)
     Foment     (the Hanoi towers example eats up 100% CPU and never finishes)
-    SCM        (no support for cond-expand, but would probably work)
+    SCM        (support for neither cond-expand nor syntax-rules)
     SIOD       (syntax-rules not implemented)
+
+Documentation
+-------------
+
+A very short manual is included (manual.md, manual.txt, manual.pdf).
diff --git a/SUPPORTED-SCHEMES b/SUPPORTED-SCHEMES
deleted file mode 100644
index ea433a3..0000000
--- a/SUPPORTED-SCHEMES
+++ /dev/null
@@ -1,38 +0,0 @@
-I have made an effort to get the interpreter working in as many Scheme
-implementations as I could. Below is a list of supported and not
-supported Schemes. "Supported" means I ran the example code pieces
-(in prolog-examples.scm) and they worked as sxpected. I did no
-further tests.
-
-There are two ways to use PLL:
-
-(load "pll-standalone.scm")    ;; this works on all supported schemes.
-
-(import (pll))                 ;; only on the systems marked as having 
-                               ;; support for R7RS modules
-
-
-
-Scheme     version      R7RS module        Note
------------------------------------------------
-Chicken     4.*		Y
-Gauche      0.9.4	Y
-Guile       2.*		-
-Chibi       0.7.2	Y
-Husk        3.19.1	-
-SISC        1.16.6	-
-Saggitarius 0.7.1	Y
-Gambit      4.7     	-                  Needs -:s flag for syntax rules, and SRFI-1
-MIT Scheme  9.1.1       -
-STklos      1.10	-
-
-Currently not supported:
-
-SigScheme  (syntax-rules is disabled in sigscheme for now)
-TinyScheme (syntax-rules not implemented)
-Scheme9    (very strange behavior -- needs investigation)
-Kawa       (AMB doesn't work because of some different call/cc behavior)
-Foment     (the Hanoi towers example eats up 100% CPU and never finishes)
-SCM        (no support for cond-expand, but would probably work)
-SIOD       (syntax-rules not implemented)
-
diff --git a/changelog b/changelog
index bc8a6a1..82ae9f7 100644
--- a/changelog
+++ b/changelog
@@ -1,3 +1,7 @@
+1.6
+* Scheme48 is supported
+* Fixed Chicken packaging problems
+* Documentation cleanup
 1.5
 * Packaging: now available as R7RS module for some implementations;
   included instructions on how to load, with and without R7RS
diff --git a/pll.meta b/pll.meta
index c755a74..8fdcb7f 100644
--- a/pll.meta
+++ b/pll.meta
@@ -2,7 +2,7 @@
  (files "COPYING"  "README.txt"  "SUPPORTED-SCHEMES"    "amb.scm"  "changelog"  "manual.html"  "manual.md" "manual.pdf"  "manual.txt"  "pll-standalone.scm"  "pll.scm"    "ppl.meta"  "prolog-core.scm"  "prolog-examples.scm"  "pll.setup"  "style.css"  "unify.scm")
  (license "GPL-3")
  (category logic)
- (needs srfi-1)
+ (needs r7rs)
  (author "Jeronimo C. Pellegrini")
  (synopsis "A simple Prolog implementation in Scheme, using the AMB operator"))
 
diff --git a/pll.release-info b/pll.release-info
index dfff410..b7297cb 100644
--- a/pll.release-info
+++ b/pll.release-info
@@ -1,4 +1,5 @@
 (repo git "git://github.com/jpellegrini/{egg-name}.git")
 (uri targz "https://github.com/jpellegrini/{egg-name}/archive/{egg-release}")
 (release "v1.5")
+(release "v1.6")
 
diff --git a/pll.setup b/pll.setup
index fc0b1ce..6bdbd86 100644
--- a/pll.setup
+++ b/pll.setup
@@ -4,5 +4,5 @@
 (install-extension
  'pll
  '("pll.so" "pll.import.so")
- '((version 1.5)))
+ '((version "1.6")))