diff --git a/binr/rax2/rax2.c b/binr/rax2/rax2.c
index 8465d36517..a0c22a4cc6 100644
--- a/binr/rax2/rax2.c
+++ b/binr/rax2/rax2.c
@@ -77,9 +77,8 @@ static int rax (char *str, int len, int last) {
 	ut8 *buf;
 	char *p, out_mode = (flags&128)? 'I': '0';
 	int i;
-	if (!(flags&4) || !len)
+	if (!(flags & 4) || !len)
 		len = strlen (str);
-
 	if ((flags & 4))
 		goto dotherax;
 	if (*str=='-') {
diff --git a/binr/rax2/test-rax2.sh b/binr/rax2/test-rax2.sh
new file mode 100755
index 0000000000..fd7ee738ba
--- /dev/null
+++ b/binr/rax2/test-rax2.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+echo "Testing echo... "
+O=`echo hello | ./rax2 -S | ./rax2 -s`
+if [ "$O" = hello ]; then
+	echo OK
+else 
+	echo FAIL
+fi
+
+echo "Testing cat..."
+./rax2 -S <rax2 | ./rax2 -s > .rax2
+A=`rahash2 -a md5 rax2 | awk '{ print $4}'`
+B=`rahash2 -a md5 .rax2 | awk '{ print $4}'`
+if [ "$A" = "$B" ]; then
+	echo OK
+else
+	echo FAIL
+fi
+rm -f .rax2
diff --git a/doc/io b/doc/io
new file mode 100644
index 0000000000..5e395c15ff
--- /dev/null
+++ b/doc/io
@@ -0,0 +1,22 @@
+How IO should work
+==================
+
+* Maps
+
+ Used to select fd. Mapaddr..size
+
+* Sections
+
+ Used to specify vaddr<->paddr
+
+Manually selecting fd is still valid and it should override maps fdselection. This is.. We need a way to tell r2 to view one fd or all of them. In case of having two files mapped on the same address space we will select the last opened.
+
+The base address is used to reallocate all vaddr offsets.
+
+Reading/writing ops should be done in a loop checking for the section boundaries.
+
+The sections must be asociated to a file, but we should be able to display/use them all in case of having non forced fd. This is, when not having overlapped files in memory.
+
+The write ops should only obey to the global io configuration and ignore the section permissions (maybe just throw a warning?)
+
+Atm sections are dupped in io and bin. We should merge them. Maybe using sdb, so we just reuse it
diff --git a/libr/core/cmd_anal.c b/libr/core/cmd_anal.c
index 266ad6bd47..aee731b857 100644
--- a/libr/core/cmd_anal.c
+++ b/libr/core/cmd_anal.c
@@ -22,16 +22,16 @@ static void find_refs(RCore *core, const char *glob) {
 /* TODO: Move into cmd_anal() */
 static void var_help(char ch) {
 	const char *kind = (ch=='v')?"locals":"args";
-if (ch) {
-	eprintf ("|Usage: af%c [idx] [type] [name]\n", ch);
-	eprintf ("| af%c                        ; list function %s\n", ch, kind);
-	eprintf ("| af%c 12 int buffer[3]       ; add %s at index, type and name\n", ch, kind);
-	eprintf ("| af%c-12                     ; delete %s at index 12\n", ch, kind);
-	eprintf ("| af%cs [index] ([offset])    ; register 'set' action\n", ch);
-	eprintf ("| af%cg [index] ([offset])    ; register 'get' action\n", ch);
-	eprintf ("|See also: afa? afv? -- add arguments and locals\n");
-} else {
-eprintf ("See afv? and afa?\n");
+	if (ch=='a' || ch=='A' || ch=='v') {
+		eprintf ("|Usage: af%c [idx] [type] [name]\n", ch);
+		eprintf ("| af%c                        ; list function %s\n", ch, kind);
+		eprintf ("| af%c 12 int buffer[3]       ; add %s at index, type and name\n", ch, kind);
+		eprintf ("| af%c-12                     ; delete %s at index 12\n", ch, kind);
+		eprintf ("| af%cs [index] ([offset])    ; register 'set' action\n", ch);
+		eprintf ("| af%cg [index] ([offset])    ; register 'get' action\n", ch);
+		eprintf ("|See also: afa? afv? -- add arguments and locals\n");
+	} else {
+		eprintf ("See afv? and afa?\n");
 }
 
 // TODO: fastrg == 'A'
@@ -73,7 +73,7 @@ static int var_cmd(RCore *core, const char *str) {
 			r_anal_var_list (core->anal, fcn, 0, 0);
 			goto end;
 		case '?':
-			var_help(*str);
+			var_help (*str);
 			goto end;
 		case '.':
 			r_anal_var_list (core->anal, fcn, core->offset, 0);
@@ -119,10 +119,16 @@ static int var_cmd(RCore *core, const char *str) {
 				p3[0]='\0';
 				p3=p3+1;
 			}
+			char kind = *str;
 			// p2 - name of variable
-			r_anal_var_add (core->anal, fcn->addr, core->offset, delta, scope,
+			char *type = "int";
+			int size = 4;
+			char *name = "num";
+			r_anal_var_add (core->anal,
+				fcn->addr, 
+				scope, delta, kind, type, size, name);
 				//r_anal_str_to_type (core->anal, p)
-				NULL, p3? atoi (p3): 0, p2);
+				//NULL, p3? atoi (p3): 0, p2);
 		} else var_help (*str);
 		break;
 	default: