diff --git a/.gitignore b/.gitignore
index 3a84a80..aeaca58 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ __pycache__
 *.run.xml
 
 env/
+*.pyc
diff --git a/Karto/README.md b/Karto/README.md
index 9c3be06..f290fbd 100644
--- a/Karto/README.md
+++ b/Karto/README.md
@@ -15,10 +15,10 @@ useful commands:
 - f8: perpendicular
 - f2: console
 
-questions:
-- what to click to create an xline with the same offset (accept suggestion)?
-- how to draw a semicircular? construction line: xl, bisect.
-- how to add a dimension text (kelio ašis)? dt (dtext).
-- how to make a legend? line type.
-- how to add labels to the coordinate system?
-- how to scale the overlay sheet of paper? stretch.
+- rotate
+- scale: by reference -- turint palyginimo objektą.
+
+- hutch: štrichavimas.
+- draworder: bring to front/back.
+- re: Regenerate screen
+- circle: 2p/3p/ttr. Liestinės.
diff --git a/misc/tools.py b/misc/tools.py
index 1145e6a..4a82d81 100644
--- a/misc/tools.py
+++ b/misc/tools.py
@@ -1,7 +1,26 @@
-
 from decimal import Decimal
 
-def deg(deg, mm, ss):
-    return (Decimal(deg) +
-        Decimal(mm) / Decimal(60) +
-        Decimal(ss) / Decimal(3600)).normalize()
+class Deg:
+    def __str__(self):
+        return "%03d - %02d - %02d" % (self.deg, self.mm, self.ss)
+
+    def __init__(self, deg, mm, ss):
+        self.deg = Decimal(deg)
+        self.mm = Decimal(mm)
+        self.ss = Decimal(ss)
+
+    @staticmethod
+    def from_1(deg):
+        assert isinstance(deg, Decimal)
+
+        pdeg, pmm = divmod(deg, 1)
+        pmm = pmm * Decimal(60)
+        pmm, pss = divmod(pmm, 1)
+        pss = pss * Decimal(60)
+        return Deg(pdeg, pmm, pss)
+
+    def frac(self):
+        return (
+            self.deg +
+            self.mm / Decimal(60) +
+            self.ss / Decimal(3600)).normalize()