diff --git a/cmd_interface.py b/cmd_interface.py
new file mode 100644
index 0000000..2483d3f
--- /dev/null
+++ b/cmd_interface.py
@@ -0,0 +1,118 @@
+
+
+from os import get_terminal_size, name, system
+from sys import stdout
+
+class Terminal:
+    def get_size():
+        return get_terminal_size().columns, get_terminal_size().lines
+
+    def get_lines():
+        return get_terminal_size().lines
+
+    def get_columns():
+        return get_terminal_size().columns
+
+    def clear():
+        system('cls' if name in ('nt', 'dos') else 'clear')
+
+    def curser_to_pos1(self):
+        for i in range(self.get_lines() + 2):
+            stdout.write("\033[F")
+
+
+class Matrix:
+    def __init__(self):
+        self.columns, self.lines = Terminal.get_size()
+        self.clear(self)
+
+    def clear(self):
+        self.matrix = []
+
+    def refresh(self):
+        self.columns, self.lines = Terminal.get_size()
+        self.clear(self)
+        for i in range(self.lines):
+            self.matrix.append([])
+            for j in range(self.columns):
+                self.matrix[i].append(" ")
+
+    def set_frame(self, x, y, dx, dy, rounded=True, double=False, title=None,
+                  alligncenter=True):
+        if double:
+            self.set(self, x, y, "╔")
+            self.set(self, x + dx, y, "╗")
+            self.set(self, x, y + dy, "╚")
+            self.set(self, x + dx, y + dy, "╝")
+            for i in range(1, dx):
+                self.set(self, x + i, y, "═")
+                self.set(self, x + i, y + dy, "═")
+            for i in range(1, dy):
+                self.set(self, x, y + i, "║")
+                self.set(self, x + dx, y + i, "║")
+        else:
+            if rounded:
+                self.set(self, x, y, "╭")
+                self.set(self, x + dx, y, "╮")
+                self.set(self, x, y + dy, "╰")
+                self.set(self, x + dx, y + dy, "╯")
+            else:
+                self.set(self, x, y, "┌")
+                self.set(self, x + dx, y, "┐")
+                self.set(self, x, y + dy, "└")
+                self.set(self, x + dx, y + dy, "┘")
+            for i in range(1, dx):
+                self.set(self, x + i, y, "─")
+                self.set(self, x + i, y + dy, "─")
+            for i in range(1, dy):
+                self.set(self, x, y + i, "│")
+                self.set(self, x + dx, y + i, "│")
+        if title is not None:
+            if alligncenter:
+                self.set(self, x + int(dx / 2) - int(len(title) / 2) - 1, y,
+                         "┤" if not double else "╡")
+                self.set(self, x + int(dx / 2) + int(len(title) / 2), y, "├" if
+                         not double else "╞")
+                self.set_string(self, x + int(dx / 2) - int(len(title) / 2),
+                                y, title)
+            else:
+                self.set(self, x + 1, y, "┤" if not double else "╡")
+                self.set(self, x + len(title) + 2, y, "├" if not double else
+                         "╞")
+                self.set_string(self, x + 2, y, title)
+
+    def set_square(self, x, y, dx, dy, char):
+        for i in range(dx):
+            for j in range(dy):
+                self.set(self, x + i, y + j, char)
+
+    def set(self, x, y, value):
+        try:
+            self.matrix[y][x] = value
+        except IndexError:
+            pass
+
+    def get(self, x, y):
+        return self.matrix[y][x]
+
+    def print(self):
+        for i in range(self.lines):
+            for j in range(self.columns):
+                print(self.matrix[i][j], end="")
+            print(end="" if i < self.lines - 1 else "\r")
+
+    def set_string(self, x, y, chars):
+        for i in range(len(chars)):
+            self.set(self, x + i, y, chars[i])
+
+    def set_string_center(self, y, chars):
+        self.set_string(self, int(Terminal.get_columns() / 2 - len(chars) / 2),
+                        y, chars)
+
+    def get_matrix(self):
+        return self.matrix
+
+    def add_matrix(self, x, y, matrix):
+        for i in range(len(matrix)):
+            for j in range(len(matrix[i])):
+                self.set(self, x + j, y + i, matrix[i][j])
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